11.(a) 10.06 cm3 of the stock 0.100 mol dm–3 solution of NaOH was required to fully neutralise 49.5 mg of a diprotic acid (H2A). Write a balanced equation for this reaction and hence determine the molar mass (Mr) of the acid. (b) Determine the pH of 0.100 mol dm–3 NaOH at 298 K [pKw = 14.0].

11.(a) 10.06 cm3 of the stock 0.100 mol dm–3 solution of NaOH was required to fully neutralise 49.5 mg of a diprotic acid (H2A). Write a balanced equation for this reaction and hence determine the molar mass (Mr) of the acid. (b) Determine the pH of 0.100 mol dm–3 NaOH at 298 K [pKw = 14.0].

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter10: Effect Of Electrolytes On Chemical Equilibria

Section: Chapter Questions

Problem 10.8QAP

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Question

11.(a) 10.06 cm³ of the stock 0.100 mol dm^–3solution of NaOH was required to fully neutralise 49.5 mg of a diprotic acid (H₂A). Write a balanced equation for this reaction and hence determine the molar mass (M_r) of the acid.

(b) Determine the pH of 0.100 mol dm^–3NaOH at 298 K [pK_w = 14.0].

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