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A chemistry graduate student is given 125. mL of a 0.90M dimethylamine ((CH3)2NH) solution. Dimethylamine is a weak base with K = 5.4 × 104. What mass of (CH3)2NHCI should the student dissolve in the (CH3)2NH solution to turn it into a buffer with pH = 11.23? You may assume that the volume of the solution doesn't change when the (CH3)2NH2Cl is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits.

A chemistry graduate student is given 125. mL of a 0.90M dimethylamine ((CH3)2NH) solution. Dimethylamine is a weak base with K = 5.4 × 104. What mass of (CH3)2NHCI should the student dissolve in the (CH3)2NH solution to turn it into a buffer with pH = 11.23? You may assume that the volume of the solution doesn't change when the (CH3)2NH2Cl is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits.

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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A chemistry graduate student is given 125. mL of a 0.90M dimethylamine ((CH3)2NH) solution. Dimethylamine is a weak base with K = 5.4 × 104. What mass of (CH3)2NHCI should the student dissolve in the (CH3)2NH solution to turn it into a buffer with pH = 11.23? You may assume that the volume of the solution doesn't change when the (CH3)2NH2Cl is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits.
Transcribed Image Text:A chemistry graduate student is given 125. mL of a 0.90M dimethylamine ((CH3)2NH) solution. Dimethylamine is a weak base with K = 5.4 × 104. What mass of (CH3)2NHCI should the student dissolve in the (CH3)2NH solution to turn it into a buffer with pH = 11.23? You may assume that the volume of the solution doesn't change when the (CH3)2NH2Cl is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits.
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