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A chemistry graduate student is given 300. mL of a 1.70M trimethylamine ((CH3), N) solution. Trimethylamine is a weak base with K₁ = 7.4 × 10. What (CH3)₂N N solution to turn it into a buffer with pH = 11.42? (CH. mass of (CH₂) NHBr should the student dissolve in the (CH3)3 You may assume that the volume of the solution doesn't change when the (CH3)NHBr is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits. e X

A chemistry graduate student is given 300. mL of a 1.70M trimethylamine ((CH3), N) solution. Trimethylamine is a weak base with K₁ = 7.4 × 10. What (CH3)₂N N solution to turn it into a buffer with pH = 11.42? (CH. mass of (CH₂) NHBr should the student dissolve in the (CH3)3 You may assume that the volume of the solution doesn't change when the (CH3)NHBr is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits. e X

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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help with the following question ( use kg for the mass)
A chemistry graduate student is given 300. mL of a 1.70 M trimethylamine \((\text{CH}_3)_3\text{N}\) solution. Trimethylamine is a weak base with \(K_b = 7.4 \times 10^{-4}\). What mass of \((\text{CH}_3)_3\text{NHBr}\) should the student dissolve in the \((\text{CH}_3)_3\text{N}\) solution to turn it into a buffer with \(pH = 11.42\)? You may assume that the volume of the solution doesn’t change when the \((\text{CH}_3)_3\text{NHBr}\) is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits. There is no graph or diagram associated with this text.
Transcribed Image Text:A chemistry graduate student is given 300. mL of a 1.70 M trimethylamine \((\text{CH}_3)_3\text{N}\) solution. Trimethylamine is a weak base with \(K_b = 7.4 \times 10^{-4}\). What mass of \((\text{CH}_3)_3\text{NHBr}\) should the student dissolve in the \((\text{CH}_3)_3\text{N}\) solution to turn it into a buffer with \(pH = 11.42\)? You may assume that the volume of the solution doesn’t change when the \((\text{CH}_3)_3\text{NHBr}\) is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits. There is no graph or diagram associated with this text.
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