A chemistry graduate student is given 100. mL of a 0.30M diethylamine ((C,H;), NH) solution. Diethylamine is a weak base with K,= 1.3 × 10¯°. v . What mass of (C,H,) NH,Br should the student dissolve in the (C,H,), NH solution to turn it into a buffer with pH = 10.94? You may assume that the volume of the solution doesn't change when the (C,H,) NH,Br is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits.

Chemistry
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Chapter15: Acid-base Equilibria
Section: Chapter Questions
Problem 88AE: Consider die titration of 50.0 mL of 0.10 M H3A (Ka1 = 5.0 104, Ka2 = 1.0 108, Ka3 = 1.0 1012)...
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A chemistry graduate student is given 100. mL of a 0.30M diethylamine ((C,H,) NH) solution. Diethylamine is a weak base with K,= 1.3 × 10 °. what
mass of (C,H5) NH,Br should the student dissolve in the (C,H,), NH solution to turn it into a buffer with pH = 10.94?
2
You may assume that the volume of the solution doesn't change when the (C,H,) NH,Br is dissolved in it. Be sure your answer has a unit symbol, and round
2
it to 2 significant digits.
Transcribed Image Text:- 3 A chemistry graduate student is given 100. mL of a 0.30M diethylamine ((C,H,) NH) solution. Diethylamine is a weak base with K,= 1.3 × 10 °. what mass of (C,H5) NH,Br should the student dissolve in the (C,H,), NH solution to turn it into a buffer with pH = 10.94? 2 You may assume that the volume of the solution doesn't change when the (C,H,) NH,Br is dissolved in it. Be sure your answer has a unit symbol, and round 2 it to 2 significant digits.
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