Chemistry: An Atoms-Focused Approach
14th Edition
ISBN: 9780393600681
Author: Gilbert
Publisher: W. W. Norton & Company
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2.
Calculate the solubility of silver acetate, AgCH3COO (s), in solutions buffered at pH =
2.00, 4.00, 6.00, 8.00, and 10.00 at 25◦ C. Take the value of Ksp for AgCH3 COO (s) to be
1.9 × 10−3 M2 at this temperature.
Ka = 1.8 * 10^ -5
Can Ag+ , Pb2+ and Hg22+ be separated if ammonia is first added to an aqueous mixture of these three cations instead of hydrochloric acid? If so, how?
You've just started your summer intern as a research assistant in the
biology department. Your first assignment is to prepare a pH 7.50 phosphate buffer solution to
be used in the isolation of DNA from a cell culture. You've discovered the following items available to you in the lab:
0.514M HPO 4 (K a-4.2x10 13)
48.6 g KOH (molar mass 56.1g)
a. Calculate the pH of your buffer.
b. Do you think that this would be a suitable buffer? Explain. SHOW YOUR WORK. Upload your file here.
Chapter 16 Solutions
Chemistry: An Atoms-Focused Approach
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What are CHNOPS? These Chemical Elements = 98% of Life | Biology | Biochemistry; Author: Socratica;https://www.youtube.com/watch?v=w90wFlR53VM;License: Standard YouTube License, CC-BY