A chemistry graduate student is given 250. mL of a 1.40M trimethylamine ((CH,) N) solution. Trimethylamine is a weak base with K,=7.4 x 10*. What mass of (CH,) NHC1 should the student dissolve in the (CH,) N solution to turn it into a buffer with pH = 10.85? 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 圖 to 2 significant digits. olo Explanation Check © 2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibility

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Chapter16: Solubility And Complex Ion Equilibria
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A chemistry graduate student is given 250. mL of a 1.40M trimethylamine ((CH,) N) solution. Trimethylamine is a weak base with K, =7.4 × 10 *. What
3
mass of (CH,) NHCI should the student dissolve in the (CH, N solution to turn it into a buffer with pH =10.85?
3
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.
olo
x10
Ar
?
Explanation
Check
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Transcribed Image Text:A chemistry graduate student is given 250. mL of a 1.40M trimethylamine ((CH,) N) solution. Trimethylamine is a weak base with K, =7.4 × 10 *. What 3 mass of (CH,) NHCI should the student dissolve in the (CH, N solution to turn it into a buffer with pH =10.85? 3 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. olo x10 Ar ? Explanation Check © 2022 McGraw Hill LLC. AlL Rights Reserved. Terms of Use | Privacy Center | Accessibility
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