3. (a) How many grams of sodium succinate (140 g/mol) and disodium succinate (162 g/mol) must be added to 1.0 L of water to make a buffer solution of concentration 50.0 mM and a pH 6.0? pKaj = 4.6, pKaz = 5.6 for succinic acid. %3D I. (b) If 0.001 moles of NaOH were added to 250 mL of the above buffer solution, what would be the actual resulting pH of that solution?

3. (a) How many grams of sodium succinate (140 g/mol) and disodium succinate (162 g/mol) must be added to 1.0 L of water to make a buffer solution of concentration 50.0 mM and a pH 6.0? pKaj = 4.6, pKaz = 5.6 for succinic acid. %3D I. (b) If 0.001 moles of NaOH were added to 250 mL of the above buffer solution, what would be the actual resulting pH of that solution?

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter14: Equilibria In Acid-base Solutions

Section: Chapter Questions

Problem 74QAP: Fifty cm3 of 1.000 M nitrous acid is titrated with 0.850 M NaOH. What is the pH of the solution (a)...

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One drop, 0.200 cm3, of 1.00 mol dm-3 of aqueous sodium hydroxide, NaOH, solution is added to 25.0 cm3 of a phosphate buffer that is 0.040 mol dm-3 in KH2PO4(aq) and 0.020 mol dm-3 in K2HPO4(aq). Calculate the resulting pH of the solution given that the second acid dissociation constant, pKa2, for phosphoric acid is 7.21.
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You make a 200mM potassium phosphate buffer (pKa of 7.20) with monobasic potassium phosphate (molecular weight 136.09 g/mol) and dibasic potassium phosphate (174.20 g/mol). For 100mL of buffer, at a pH of 7.20, how many grams of monobasic potassium phosphate are needed? Please walk through this step-by-step.
A benzoic acid-sodium benzoate buffer is prepared by dissolving a certain amount of sodium benzoate, NaC6H5CO2 (molar mass = 144.1 g/mol) in a 1.25-L of solution that contains 0.025 M benzoic acid, C6H5COOH (Ka = 6.3 x 10-5). How many grams of sodium benzoate must be added so that the resulting solution has a pH of 4.00? (A) 1.82 g (B) 2.84 g (C) 5.71 g (D) 7.14 g
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