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Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Cacodylic acid (dimethylarsinic acid, (HAsO2(CH3)2) is a common buffer used in biology to prepare and fix biological samples. It has a pKa value of 6.30. Calculate the pH of a buffer solution prepared by mixing 10.0 ml of 0.200 M NaOH woth 20.0 ml of 0.150 M cacodylic acid. Express answer on two decimal places.
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- A titration system is set up as follows: the bottom flask contains a sample solution of 50.0-mL 0.50 M C2H3NH2 (ethylamine), the burette is filled with 0.20 M HCl as titrant. Kb of C2H3NH2 = 6.5 ´ 10-4 What is the initial pH of above sample solution before titration starts?arrow_forwardWhat is the pH of a buffer solution that is 0.214 M in ammonia and 0.390 M in ammonium chloride (NH4CI)? The Kü of ammonia is 1.8 x 10-5. (Two decimal places)arrow_forwardUse ICE table and also dont use mmol as your units for stuffarrow_forward
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