a - the number of moles of H+(aq) supplied by one mole of acid in the reaction (For acid) a - the number of moles of OH-(aq) … Why don't ships rust? Given that the measurement uncertainty in the mass measured on a standard analytical balance is ±0.1 mg, the relative uncertainty in the mass of oxalic acid dihydrate would be about one part in a thousand, similar to the measurement uncertainty in the volume measurement in the titration. Join Yahoo Answers and get 100 points today. What is the pOH of a .22 M NaOH solution? Cl2 changes to Cl− and ClO− in cold NaOH. This is because NaOH produces Na^+ and OH^-. Determination of the equivalent weight of a salt by ion exchange. 56.1 and 40, respectively. 0 0. Median response time is 34 minutes and may be longer for new subjects. check all that apply. An example is the volumetric standardisation of a solution of sodium hydroxide which has been prepared to approximately 0.1 mol dm . For example, in the following two reactions the equivalent weight of H 2 SO 4 would be 49 grams or 0.5 mol in the first reaction but 98 grams or 1 mol in the second. therefore equivalent masses are … A) Air, seawater  2 Answers. You risk contaminating your NaOH solution. Answer Save. Which pair of substances are both mixtures ? But as $\ce{CO2}$ is not an acid or base and even doesn't undergo redox so how do we determine its equivalent weight? Equivalent weight CaCl 2, AlCl 3, Al (SO ) 6 2 3 2 4 3 = = = M M M (ii) Equivalent weight of acids = Molar mass Basicity e.g. So, in the example given, (0.01032 L)(0.1000 mol/L ) = 0.001032 moles or 0.001032 equivalents. Join / Login. Power Formula . Hence, equivalent weight of sulphuric acid (H 2 S O 4) is (2X1 + 32 + 4X16)/2 = 98/2 = 49. Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes! C) Alcohol, water The epoxy equivalent weight (EEW) of ER is a value which can reflect the activity of ER. Answered by Expert Answer: Disproportion is the silmulteneous oxidation and reduction of the same species. Also include the NFPA ratings for any compounds with a non-zero rating. Relevance. In this case the density is 1.36 g / mL and the molecular weight of NaOH is 40.0 g. Since molarity is … How many grams of Calcium chloride must be dissolved to prepare 500ml of 0.3M solution? Death toll rises for World Cup workers in Qatar, Kaley Cuoco recalls moment co-star quit 'Big Bang', Former Cuomo aide says she resigned after forcible kiss, Woman's tattoo takes on new meaning amid pandemic, Billionaire on why Costco presents danger to Amazon, Olympian McKayla Maroney ensnared in mystery ‘cult’, Sheriff: Tiger Woods crash ruled 'purely an accident', Christie turns tables on Dems: 'Science is on our side', Experts give long-term effects of COVID-19 a name, 'Stop the Steal' movement's funding shrouded in mystery, 'Home Improvement' star enters domestic violence plea. a - the number of moles of H+(aq) supplied by one mole of acid in the reaction (For acid) a - the number of moles of OH-(aq) … So, equivalent weight of NaOH = M/n = 40/1 =40 Its neutralization equivalent, NE (Note 1), is lower, only about 70 g per mol of NaOH, relative to 204 g per mol of NaOH for KHP, and therefore the uncertainties in mass measurements are proportionally greater. Still have questions? Any fine chemical company with excellent product? Before we begin titrating that wine sample we have one more important step, standardization of NaOH solution. When they did trial 2, they went past the endpoint of phenolphthalein and had to backtitrate. Also provide me the formula difference between the oxalic acid and crystalline oxalic acid. A Normal solution of a solute contains the equivalent weight of the solute in grams in 1litre of solution (by definition). How many grams of Calcium chloride must be dissolved to prepare 500ml of 0.3M solution? (a) 2,2,2-trichloroethanol. 3.0 litres 0.6N NaOH contains 0.6 x 3 = 1.8 equivalent weights. Cl 2 is a yellow - green toxic gas. 11. acid with a molecular weight of 204.22 g/mol, 1 mole of KHP reacts with 1 mole of NaOH. The equivalent weight of phosphoric acid `(H_(3)PO_(4))` in the reaction `NaOH+H_(3)PO_(4) rarr NaH_(2)PO_(4)+H_(2)O` is *, Q: Draw the structures of the following compounds. In the polymerization of ethane-1,2-diol and butanedioic acid, is it an addition or a condensation reaction? administe... A: In the given question we have to calculate milligrams of active ingredient in 5 ml of dose. However the measurement uncertainty in the mass of potassium hydrogen iodate would be five times lower, because its equivalent weight is five times higher: such an uncertainty in the measured mass is negligible in comparison to the uncertainty in the volume measured during the titration (see example below). using Theoretical Equivalent weight of sulfuric acid (H 2 SO 4) = 49.03 g/equivalent of H + Reasoning: 98.07 g/mol H 2 SO 4 * (1 mole H 2 SO 4 / 2 equivalents of H +) = 49.03 g/equivalent of H + In this example, the magnitude of the equivalent weight of sulfuric acid is HALF of that of the molecular weight. Therefore for 900 ml, one will need 3.6 g of NaOH. Asked by patra04011965 14th July 2019 9:16 AM . Answers: 3 Show answers Another question on Chemistry. 3 molecules of bromine, and 6 molecules of sodium hydroxide. Favourite answer. Borax. What is the equivalent weight of an organic acid if 44.00 mL NaOH solution (1.000 mL ≎ 1.100 mL HCl ≎ 0.01001 g CaCO3) are required to neutralize 0.5192 g of the organic acid? When choosing primary standards in analytical chemistry, compounds with higher equivalent weights are generally more desirable because weighing errors are reduced. If these are not provided for you, you need to look them up on Aldrich or Acros. Before you come to class: • List all of the reagents (formulas and names) in your notebook. In every case, it is necessary to define the unit weight basis of the results-"ppm alkalinity as CaCO 3" or "ppm sulfate as SO 4 2-" or "ppm silica as SiO 2". Sodium hydroxide, also known as lye and caustic soda, is an inorganic compound with the formula NaOH. The equivalent weight of cl2 in reaction with NaoH 2 See answers MacTavish343 MacTavish343 Hell.. Follow steps 7 and 8 for each of your flasks. 11 answers. An accuracy of about 1% is the best one can do. Tension Formula. The equivalent weights of the three acids 63.04 g, 204.23 g and 389.92 g respectively, and the masses required for the standardisation are 126.1 mg, 408.5 mg and 779.8 mg respectively. When you dealing with Cl 2, be very careful to get protected from it. It is necessary to calculate the mass of a solid acid which will react with about 20 cm of this solution (for a titration using a 25 cm burette): suitable solid acids include oxalic acid dihydrate, potassium hydrogen phthalate and potassium hydrogen iodate. Why butane gas is … Solution for What is the equivalent weight of an organic acid if 44.00 mL NaOH solution (1.000 mL ≎ 1.100 mL HCl ≎ 0.01001 g CaCO3) are required to neutralize… Hence it will be =3×1+31+4×16=98 +1 vote . Familiarity with the reagents will help you avoid costly mistakes during the experiment. Molecular weight of of NaOH is 40. given co... *Response times vary by subject and question complexity. Equivalent weight NaOH = M, Ca(OH) 2 = M 2, Al(OH) 3 = M 3 The number of gram-equivalents (Eq) Equivalent = = Weight of compound Equivalent weight Equivalent w w eight Mole Equivalent Relationship In a given weight (w) of sample, number of moles (n) and number of equivalents (eq) are related as n w M = and Eq = w Equivalent weight Q Eq n Equivalent weight M Protocol Step 1. The half cell reactions are : As from above, 3 moles of Cl 2 . 10. Equivalent Mass of Salts. Never put unused solution back into your stock bottle. Equivalent weight of crystalline oxalic acid is:- (1) 90, (2) 63, (3) 53, (4) 45. C. 2.8. Trending questions . The NaOH solution remaining in your buret at the end of each lab session should be saved in a clean dry beaker and used for rinsing the buret at the next lab session. and 5 … Normality • Example: 1N solution • 1 normal (1 N) solution contains 1 equivalent weight of solute in 1L or 1000ml of solution., • So the equivalent weight of NaOH is 40. 'Acids And Bases Titration 1 Determination Of NaOH By April 28th, 2018 - The Balanced Chemical Equation For The Neutralization Of NaOH Aq Report Your Results As Acetic Acid In Mol L Pre Lab Questions Answer In The Space''TITRATION PART I INTRODUCTION Cerritos College April 23rd, 2018 - EXPERIMENT 12 Chemistry 110 Lab TITRATION PART I INTRODUCTION ... Feb 15th, 2021Chemistry … Lens Formula and Magnification. Trending questions. Define the following terms: molarity, normality, mole, molar, molal, molality, gram, equivalent weight. 10. 2.2. Its acidity is 1. ooo!! Equivalent weight = Molecular mass/a. B) Oxygen, vinegar Equivalent weight of FeSO4 = 152g/Mole (2) 8. Thankfully you don't have to mess with what equivalent weights are it's a straight forward proportion:-1.0 litre 1.0N NaOH contains 1.0 equ wts. Relevance. A 1.0N solution (i.e. Pre-Laboratory Asssignment: Determining the Equivalent Mass of an Unknown Acid by Titration. It refers to the equivalent number of epoxy groups in per 100 g of ER [24]. The NaOH solution remaining in your buret at the end of each lab session should be saved in a clean dry beaker and used for rinsing the buret at the next lab session. e.g. The equivalent weight of phosphoric acid (H3PO4) in the reaction : NaOH + H3PO4 → NaH2PO4+ H2O is (a) 25 (b) 49 (c) 59 (d) 98 Normality • Example: 1N solution • 1 normal (1 N) solution contains 1 equivalent weight of solute in 1L or 1000ml of solution., • So the equivalent weight of NaOH is 40. Use the … excess reactant aqueous copper chloride excess reactant aluminum oxygen product solid copper carbon dioxide product … 1 Answer. Q: dexamethasone syrup contain 0.2 Q: Two buffers are prepared by adding an equal number of moles of formic acid (HCOOH) and sodium format... Q: Identify the postulate of Dalton’s theory that is violated by the following observations: 59.95% of ... A: According to dalton's theory, 1st ample contains 59.95 % titanium while 2nd sample contains 60.1 % o... Q: A sample of starch is hydrolyzed for some unknown length of time. C. Equivalent Weight of Unknown Acid, based on Sample #1 In Part A of the calculations above, we determined that we used 0.002768 moles of NaOH to titrate Sample #1. Relation Between Normality And Molarity. How many grams of H, O are needed to produce 13 g of NaOH? Preparing Solutions as Molar Equivalents. Equation and Formula. D. 4.8. Theoretical Equivalent weight of sulfuric acid (H 2 SO 4) = 49.03 g/equivalent of H + Reasoning: 98.07 g/mol H 2 SO 4 * (1 mole H 2 SO 4 / 2 equivalents of H +) = 49.03 g/equivalent of H + In this example, the magnitude of the equivalent weight of sulfuric acid is HALF of that of the molecular weight. To make 1 N solution , dissolve 40.00 g of sodium hydroxide in water to make volume 1 L in a volumetric flask. It is common to use a solubility aid such as 1 molar equivalent (1eq.) Note that this acid can donate two protons, as the sulfate ion is left with a charge of −2. C. Equivalent Weight of Unknown Acid, based on Sample #1 In Part A of the calculations above, we determined that we used 0.002768 moles of NaOH to titrate Sample #1. Weigh 3.6 g of solid NaOH using one-place electronic balance and place in a clean and dry 1-liter bottle. \text{Equivalent Mass of NaOH}=\dfrac{40}{1}=40.\ _\square Equivalent Mass of NaOH = 1 4 0 = 4 0. On the other hand, sodium hydroxide has the same equivalent weight in both reactions, one mol or 40 grams. Chemical Formula of Common Compounds. It is a white solid ionic compound consisting of sodium cations Na + and hydroxide anions OH −. 21.5ml of ferrous sulfate solution required 25ml of O. 2 0. 7 years ago. For example, calcium (equivalent weight 20.0) is reported in terms of "calcium as CaCO 3" (equivalent weight 50.0). Still have questions? what is the equivalent weight of KOH and NaOH? X is a made up element and contains 4 valence electrons. plays_poorly... Lv 7. Molecular weight of NaOH = 40 g/mole (2) 7. Answered by Expert CBSE XII Science Chemistry Electrochemistry Plz answer 3.14 Asked by lovemaan5500 13th August 2019 5:47 PM . 1.0 litre 0.6N NaOH contains 0.6 equ wts 3.0 litres 0.6N NaOH contains 0.6 x 3 = 1.8 equivalent weights. Which of the following are diprotic acids? Trending questions . Equivalent weight of Cl2 Also corrosive to the metals. Equivalent weight of FeSO4 = 152g/Mole (2) 8. Relevance. equivalent weight of chlorine molecule in the equation 3Cl2 +6NaOH --> NaClO3 +5NaCl +3H2O. A: The given data is as follows: So molar mass of the acid is its equivalent mass. An accuracy of about 1% is the best one can do. Since the Equivalent Weight of NaOH is equal to Molar Mass hence the molarity is equal to Normality in this case. Therefore one mole of NaOH is one equivalent. A Normal solution of a solute contains the equivalent weight of the solute in grams in 1litre of solution (by definition). It gives a negative iodine test an... A: The hydrolysis of starch produces glucose. Follow steps 7 and 8 for each of your flasks. So a 1 M solution of H2SO4 is 2 N. The same for a base like Ba(OH)2. A. (2) 9. active ingredient would be It has units of g/eq. Equivalent weight of crystalline oxalic acid is:- (1) 90, (2) 63, (3) 53, (4) 45. A: Interpretation: The structures of the following compound is to be drawn. Join Yahoo Answers and get 100 points today. In the equation NaOH+H3PO4 given by NaH2PO4+H2O,the equivalent weight of H3PO4is? For NaOH in a titration, there is one equivalent per each equivalent weight or mole. To make 1 N solution , dissolve 40.00 g of sodium hydroxide in water to make volume 1 L in a volumetric flask. Answered by Expert CBSE XII Science Chemistry Electrochemistry Plz answer 3.14 Asked by lovemaan5500 13th August 2019 5:47 PM . In this reaction 1g equivalent NaOH reacts with one mole H3PO4. If the solution has 1 equivalent weight of NaOH per L, it's called 1 N. It turns out that the molecular weight of NaOH equals the equivalent weight, so 1 M = 1 N. The same for HCl. Similarly, basicity of oxalic acid is 2. We can denote the alkali as MOH in the equation. The equivalent weight of an acid or base for neutralization reactions or of any other compound that acts by double decomposition is the quantity of the compound that will furnish or react with or be equivalent to 1.00797 g of hydrogen ion or 17.0074 g of hydroxide ion; e.g., hydrochloric acid (HCl), 36.461 g; sulfuric acid (H 2 SO 4), 98.078/2 g; sodium hydroxide (NaOH), 40 g; sodium carbonate (Na 2 CO 3), 105.9892/ … ? For a base such as NaOH, it can react with one mole of H+. plays_poorly... Lv 7. equivalent weight of chlorine molecule in the equation 3Cl2 +6NaOH --> NaClO3 +5NaCl +3H2O. Anonymous. 0 0. Jan. 59.5k 10 10 gold badges 147 147 silver badges 321 321 bronze badges. Solution for What is the equivalent weight of an organic acid if 44.00 mL NaOH solution (1.000 mL ≎ 1.100 mL HCl ≎ 0.01001 g CaCO3) are required to neutralize… Parallelogram Formula. NaOH is corrosive and may severely irritate skin, eyes, and mucous membranes. acid-base analytical-chemistry titration  Share. LEARNING APP; ANSWR; CODR; XPLOR; SCHOOL OS; STAR; answr. Chris G. Lv 4. Favourite answer. Improve this question. Favourite answer. You risk contaminating your NaOH solution. H2 /NI Why is (H2O2) known as hydrogen peroxide and not hydrogen dioxide? Boiling Point Formula. Relevance. I'm a Zoology student and have learned chemistry for XII + 2 years. This the equivalent weight is 98.0/2 = 49.0. Equivalent Weight: Equivalent weight of an acid is the mass of acid required to generate 1 mole of H + ions in aqueous solution. Answer Save. H 2O(l) + Na +(aq) + K+(aq) + C 8H 4O 4 2 −(aq) To remove any loosely bound waters of hydration, KHP is normally heated at 110°C for one hour then cooled in a desiccator before use. Join. Equivalent Mass of NaOH = 40 1 = 40. Favourite answer. Follow edited Dec 18 '18 at 4:25. and 5 … Answer. КОН/alc. D) Water, carbon dioxide. Get answers by asking now. Students Also Read. Add around 500 ml of DI water, put the cap on and shake well to completely dissolve the solid NaOH. 3. Find the weight of K O H in its 50 milli equivalents? Anonymous. Equivalent weight of Cl2 Standardization. Thankfully you don't have to mess with what equivalent weights are it's a straight forward proportion:-. So in my view to get the equivalent wights, you need to determine the molar masses in each; Molar mass of Br2 = 158, NaOH =40, NaBr=102, NaBrO3=150. Use … For Ba(OH) 2, however, one equivalent is ½ mol because it takes only half a mole to react with one mole of H+. Asked by patra04011965 14th July 2019 9:16 AM . Since OH - and H + ions react on a 1:1 stoichiometric basis, this means that Sample #1 must have produced 0.002768 moles of H + ion. Answer Save. 9 years ago. a 'normal' solution) of a substance contains one equivalent weight in 1 litre of the solution. Solution: The general equation of Equivalent weight is. Questions Ask your question now equation for the reaction between chlorine and hot concentrated alkali . (i) Equivalent weight of a salt (EW) = Molar mass Net positive (or negative) valency e.g. Therefore one mole of NaOH is one equivalent. 7 years ago. What's something you just don't understand? Ask question + 100. Cl2 changes to Cl− and ClO− in cold NaOH. When they did trial 2, they went past the endpoint of phenolphthalein and had to backtitrate. chemistry. 1 Answer. The addition reaction of methanol and ethanol to form methoxyethane. A student collected their titration data for the standardization of \(\ce{NaOH}\) in the table below. Answer Save. Hence, equivalent weight of oxalic acid (H 2 C 2 O 4) is (2X1 + 2X12 + 4X16)/2 = 90/2=45. The equivalent weight of an acid (also called an equivalent) is the weight in grams that furnishes one mole of H+ ion in an acid-base reaction. (2) 9. Equivalent weight, E = Molecular weight of acid: Basicity: Basicity of sulphuric acid is 2. acid-base analytical-chemistry titration  Share. Q: One mole of an ideal gas is confined in a 0.3-m diameter cylinder by a piston on which rests a 100-k... A: Since you have posted a question with multiple subparts, we are entitled to answer only first three ... Q: Please find the question in the attachment. Ask question + 100. Also provide me the formula difference between the oxalic acid and crystalline oxalic acid. Join. You can then use the density and the molecular weight to determine the molarity of the solution. Its neutralization equivalent, NE (Note 1), is lower, only about 70 g per mol of NaOH, relative to 204 g per mol of NaOH for KHP, and therefore the uncertainties in mass measurements are proportionally greater. For a 0.1 N solution (used for wine analysis) 4.00 g of NaOH per liter is needed. IN KMnO4 solution in acid medium for complete oxidation Calculate the amount of ferrous sulfate present in 250ml of its solution. (i) Equivalent weight of a salt (EW) = Molar mass Net positive (or negative) valency e.g. Still have questions? Find answers to questions asked by student like you. Join Yahoo Answers and get 100 points today. So rubbing two sticks together to make fire... even breadsticks? Why don't ships rust? The equivalent weight of phosphoric acid `(H_(3)PO_(4))` in the reaction `NaOH+H_(3)PO_(4) rarr NaH_(2)PO_(4)+H_(2)O` is Equivalent weight (EW) is the weight in grams of one equivalent (eq). 11. Learn more about Appendix 2: Molecular and Equivalent Weights on GlobalSpec. 21.5ml of ferrous sulfate solution required 25ml of O. 1.6. 1 decade ago. Q: Give the equation for the addition reaction of methanol and ethanol to form methoxyethane(an ether). Please explain along with other example disproportionate reaction Asked by vidyavikram10 25th July 2019, 10:38 AM. Get answers by asking now. P.S. When you perform this reaction, what could remain at the end of the reaction? Y is a made u... Q: Propyl aldehyde convert to propyl alcohol A: To find: How much CuSO4*H2O would be needed to make 500ml of a 0.2M solution? Cl 2 is a yellow - green toxic gas. Solution: The general equation of Equivalent weight is. Finding the equivalent mass of salts is quite interesting; it's more like the reaction between the acids and bases. Weight of 1 equivalent of K O H = 5 6 g / e q. IN KMnO4 solution in acid medium for complete oxidation Calculate the amount of ferrous sulfate present in 250ml of its solution. Follow edited Dec 18 '18 at 4:25. What is more dangerous, biohazard or radioactivity? Please explain along with other example disproportionate reaction Asked by vidyavikram10 25th July 2019, 10:38 AM. So, in 3 litres of a 0.6N solution there are 3 x 0.6 = 1.8 equivalent weights. Since OH - and H + ions react on a 1:1 stoichiometric basis, this means that Sample #1 must have produced 0.002768 moles of H + ion. Jan. 59.5k 10 10 gold badges 147 147 silver badges 321 321 bronze badges. Questions Ask your question now equation for the reaction between chlorine and hot concentrated alkali . CHAPTER 5 Molarity and Normality Outline Molarity Putting It All Together Normality Interconversion Between Molarity and Normality Molality Interconversion Between Units Objectives At the end of this chapter, the reader should be able to do the following: 1. Dental Formula. Pre-Laboratory Asssignment: Determining the Equivalent Mass of an Unknown Acid by Titration. So the equivalent weight of NaOH is 40. Molecular weight of NaOH = 40 g/mole (2) 7. H20 /H- A student collected their titration data for the standardization of \(\ce{NaOH}\) in the table below. However, ppm magnesium as Mg 2+ equals 12.2 (magnesium equivalent weight) divided by 50.0 (CaCO 3 equivalent weight) times the ppm magnesium as CaCO 3. When you dealing with Cl 2, be very careful to get protected from it. The calculation of equivalent weight of 3Br2 + 6NaOH gives 5NaBr+ NaBrO3. One OH- for each NaOH. Get your answers by asking now. 1.0 litre 0.6N NaOH … We generally recommend that a 100 mM sodium hydroxide solution is used to dissolve the active compound. Chemistry, 22.06.2019 02:30. The test for calcium is calibrated in terms of CaCO 3, so the conversion factor 2.5 (50/20) is not needed. But for H2SO4, molecular weight 98, the equivalent weight is 98/2 = 49g. To make 1 N solution, dissolve 40.00 g of sodium hydroxide in water to make volume 1 liter. 5 0 milli equivalents = 5 0 × 1 0 − 3 equivalents. Therefore, the equivalent weight = (98/2) = 49 Equivalent weight of H3PO 4 is 49. (2) KHC 8H 4O 4(aq) + NaOH(aq) ! Using the batch specific molecular weight (M.W.) what is the equivalent weight of KOH and NaOH? Name Formula Molecular Weight Equivalent Weight Aluminum Sulfate Al 2(SO 4) 3 18H 2O 666. But as $\ce{CO2}$ is not an acid or base and even doesn't undergo redox so how do we determine its equivalent weight? Equivalent weight CaCl 2, AlCl 3, Al (SO ) 6 2 3 2 4 3 = = = M M M (ii) Equivalent weight of acids = Molar mass Basicity e.g. Click hereto get an answer to your question ️ Find the weight of KOH in its 50 milli equivalents? where. 2 Na, O2 + 2 H20-4 NaOH + O2. 11 answers. Nous voudrions effectuer une description ici mais le site que vous consultez ne nous en laisse pas la possibilité. B. Why butane gas is … Equivalent weight = Molecular mass/a. 9 years ago. • The equivalent weight will be determined by titrating a known mass of the acid with NaOH 139-140 cis-butenedioic 116 (maleic) acid 2-chlorobenzoic acid 157 140 135- 136 trans-cinnamic acid 148 2-hydroxybenzoic 180 135 acid acetate Formula MWEW MP See Table, p.110 Name COOH OCOCH3 CH CH COOH Cl COOH H HOOC COOH 180 148 157 58 Equivalent Weight (EW) Theoretical EW = Molecular … Explanation: The given reaction is : NaOH + H 3 PO 4 → NaH 2 PO 4 + H 2 O. Molecular mass of H 3 PO 4 is 98. Improve this question. We can denote the alkali as MOH in the equation. Trending questions. mg / ml ,how many milligrams of I'm a Zoology student and have learned chemistry for XII + 2 years. P.S. For Ba(OH) 2, however, one equivalent is ½ mol because it takes only half a mole to react with one mole of H+. the equivalent weights are one half and one third of the molar masses, respectively. NaOH is corrosive and may severely irritate skin, eyes, and mucous membranes. 56.1 and 40, respectively. gives 5 molecules of sodium bromide and 1 mole of sodium bromate . of sodium hydroxide (NaOH) in the preparation of aqueous solutions of some amino acids. where. "Give the normality and equivalent weights of the underlined compound": HCl + NaOH --> NaCl + H2O ___ _____ Any and all help would be MAJORLY appreciated. In the equation NaOH+H3PO4 given by NaH2PO4+H2O,the equivalent weight of H3PO4is? (I know, crappy underlining job, … Also corrosive to the metals. Never put unused solution back into your stock bottle. Answered by Expert Answer: Disproportion is the silmulteneous oxidation and reduction of the same species. answered Jan 2, 2019 by alam905 (91.0k points) Correct option (d) 98. The half cell reactions are : As from above, 3 moles of Cl 2 . Correspondingly, the equivalent weight of a base is the weight in grams that accepts one mole of H+ ion in an acid-base reaction. 2 Answers.