A buffer contains 0.035 mol of boric acid (pKa = 9.15) and 0.015 mol of sodium borate per liter. (a) Calculate the pH of the buffer (b) Calculate the pH when 2.5 mL of 0.50 M HCI is added to 0.5 L of the buffer (c) Calculate the pH when 2.5 mL of 0.50 M HCI is added to 0.5 L of pure water?

A buffer contains 0.035 mol of boric acid (pKa = 9.15) and 0.015 mol of sodium borate per liter. (a) Calculate the pH of the buffer (b) Calculate the pH when 2.5 mL of 0.50 M HCI is added to 0.5 L of the buffer (c) Calculate the pH when 2.5 mL of 0.50 M HCI is added to 0.5 L of pure water?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

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Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.

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2) A buffer contains 0.035 mol of boric acid (pKa = 9.15) and 0.015 mol of sodium borate per liter.
(a) Calculate the pH of the buffer
(b) Calculate the pH when 2.5 mL of 0.50 M HCI is added to 0.5 L of the buffer
(c) Calculate the pH when 2.5 mL of 0.50 M HCI is added to 0.5 L of pure water?

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