Cacodylic acid (dimethylarsinic acid, HASO₂ (CH3)2) is a common buffer used in biology to prepare and fix biological samples. The pK₂ of cacodylic acid is 6.3. ▼ ▼ Part A -1 What is the pH of a buffer solution prepared by mixing 20.0 mL of 0.0400 mol L-¹ NaOH with 20.0 mL of 0.130 mol L-¹ cacodylic acid? Express your answer using one decimal place. pH = 5.9 Submit Correct Part B Previous Answers What is the pH of the buffer solution in part A after 0.0002 moles of H3O+ was added to the mixture? Express your answer using one decimal place. 17 ΑΣΦ pH = Submit Previous Answers Request Answer ? X Incorrect; Try Again; One attempt remaining

Cacodylic acid (dimethylarsinic acid, HASO₂ (CH3)2) is a common buffer used in biology to prepare and fix biological samples. The pK₂ of cacodylic acid is 6.3. ▼ ▼ Part A -1 What is the pH of a buffer solution prepared by mixing 20.0 mL of 0.0400 mol L-¹ NaOH with 20.0 mL of 0.130 mol L-¹ cacodylic acid? Express your answer using one decimal place. pH = 5.9 Submit Correct Part B Previous Answers What is the pH of the buffer solution in part A after 0.0002 moles of H3O+ was added to the mixture? Express your answer using one decimal place. 17 ΑΣΦ pH = Submit Previous Answers Request Answer ? X Incorrect; Try Again; One attempt remaining

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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