What A chemistry graduate student is given 500. mL of a 1.50M trimethylamine (CH, N solution. Trimethylamine is a weak base with K, =7.4 x 10 mass of (CH, NHCI should the student dissolve in the (CH, N solution to turn it into a buffer with pH =11.39? You may assume that the volume of the solution doesn't change when the (CH, NHCI is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits.

Chemistry
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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
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A chemistry graduate student is given 500. mL of a 1.50M trimethylamine ((CH,) N solution. Trimethylamine is a weak base with K,=7.4 ×10
mass of (CH,) NHCI should the student dissolve in the (CH,) N solution to turn it into a buffer with pH =11.39?
You may assume that the volume of the solution doesn't change when the (CH,) NHC1 is dissolved in it. Be sure your answer has a unit symbol, and round it
to 2 significant digits.
10
Transcribed Image Text:A chemistry graduate student is given 500. mL of a 1.50M trimethylamine ((CH,) N solution. Trimethylamine is a weak base with K,=7.4 ×10 mass of (CH,) NHCI should the student dissolve in the (CH,) N solution to turn it into a buffer with pH =11.39? You may assume that the volume of the solution doesn't change when the (CH,) NHC1 is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits. 10
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