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A chemistry graduate student is given 450. ml of a 1.10M dimethylamine (CH:) NH) solution. Dimethylamine is a weak base with K,=5.4 x 10 *. What mass of (CH,),NH,CI should the student dissolve in the (CH,),NH solution to turn it into a buffer with pH = 10.89?

A chemistry graduate student is given 450. ml of a 1.10M dimethylamine (CH:) NH) solution. Dimethylamine is a weak base with K,=5.4 x 10 *. What mass of (CH,),NH,CI should the student dissolve in the (CH,),NH solution to turn it into a buffer with pH = 10.89?

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 450. mL of a 1.10M dimethylamine (CH.) NH) solution. Dimethylamine is a weak base with K,=5.4 × 10 4. What mass of (CH,),NH,CI should the student dissolve in the (CH,), NH solution to turn it into a buffer with pH = 10.89? You may assume that the volume of the solution doesn't change when the (CH,),NH,CI 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 450. mL of a 1.10M dimethylamine (CH.) NH) solution. Dimethylamine is a weak base with K,=5.4 × 10 4. What mass of (CH,),NH,CI should the student dissolve in the (CH,), NH solution to turn it into a buffer with pH = 10.89? You may assume that the volume of the solution doesn't change when the (CH,),NH,CI is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits. ?
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