A chemistry graduate student is given 450. mL of a 0.30M diethylamine ((C₂H²)₂NH) NH solution. Diethylamine is a weak base with K₂ b=1.3 × 10¯³. What mass of (C₂H₂)2NH₂Cl should the student dissolve in the (C₂H₂)₂NH 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 (C₂H²)₂NH₂Cl is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits. 0 0 x10 X

Chemistry: Principles and Reactions
8th Edition
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Author:William L. Masterton, Cecile N. Hurley
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Chapter15: Complex Ion And Precipitation Equilibria
Section: Chapter Questions
Problem 11QAP: A buffer is prepared by dissolving 0.0250 mol of sodium nitrite, NaNO2, in 250.0 mL of 0.0410 M...
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A chemistry graduate student is given 450. mL of a 0.30M diethylamine ((C₂H5),NH) solution. Diethylamine is a weak base with
-3
K=1.3 x 10
b
What mass of (C₂H₂)₂NH₂Cl should the student dissolve in the (C₂H₂)₂NH solution to turn it into a buffer with pH = 10.94?
2
2
0
2
You may assume that the volume of the solution doesn't change when the (C₂H₂)₂NH₂Cl is dissolved in it. Be sure your answer has a unit
2
symbol, and round it to 2 significant digits.
x10
X
Ś
Transcribed Image Text:A chemistry graduate student is given 450. mL of a 0.30M diethylamine ((C₂H5),NH) solution. Diethylamine is a weak base with -3 K=1.3 x 10 b What mass of (C₂H₂)₂NH₂Cl should the student dissolve in the (C₂H₂)₂NH solution to turn it into a buffer with pH = 10.94? 2 2 0 2 You may assume that the volume of the solution doesn't change when the (C₂H₂)₂NH₂Cl is dissolved in it. Be sure your answer has a unit 2 symbol, and round it to 2 significant digits. x10 X Ś
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