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How many grams of solid sodium cyanide should be added to 1.50 L of 0.172 M hydrocyanic acid solution to prepare a buffer with a pH of 8.570? (K, for hydrocyanic acid = 4.00x1010) 1.24 g sodium cyanide

How many grams of solid sodium cyanide should be added to 1.50 L of 0.172 M hydrocyanic acid solution to prepare a buffer with a pH of 8.570? (K, for hydrocyanic acid = 4.00x1010) 1.24 g sodium cyanide

Chemistry
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
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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**Educational Content:** **Buffer Solution Preparation: Sodium Cyanide and Hydrocyanic Acid** **Question:** How many grams of solid sodium cyanide should be added to 1.50 L of 0.172 M hydrocyanic acid solution to prepare a buffer with a pH of 8.570? (Kₐ for hydrocyanic acid = 4.00×10⁻¹⁰) **Answer:** 1.24 g sodium cyanide This content explains the preparation of a buffer solution using sodium cyanide and hydrocyanic acid. The goal is to achieve a specific pH of 8.570 for the buffer. By applying the Henderson-Hasselbalch equation, the necessary amount of sodium cyanide can be calculated to reach this desired pH level.
Transcribed Image Text:**Educational Content:** **Buffer Solution Preparation: Sodium Cyanide and Hydrocyanic Acid** **Question:** How many grams of solid sodium cyanide should be added to 1.50 L of 0.172 M hydrocyanic acid solution to prepare a buffer with a pH of 8.570? (Kₐ for hydrocyanic acid = 4.00×10⁻¹⁰) **Answer:** 1.24 g sodium cyanide This content explains the preparation of a buffer solution using sodium cyanide and hydrocyanic acid. The goal is to achieve a specific pH of 8.570 for the buffer. By applying the Henderson-Hasselbalch equation, the necessary amount of sodium cyanide can be calculated to reach this desired pH level.
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