-4 A chemistry graduate student is given 100. mL of a 1.50M trimethylamine (CH,),N)s solution. Trimethylamine is a weak base with K, = 7.4 x 10 *. What mass of (CH,), NHBR should the student dissolve in the 3 (CH,) N solution to turn it into a buffer with pH = 11.28? CH. You may assume that the volume of the solution doesn't change when the (CH,) NHB is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits.

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Chapter20: Acidity And Pka Of Phenols
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A chemistry graduate student is given 100. mL of a 1.50M trimethylamine ((CH,) N)
solution. Trimethylamine is a weak base with K, = 7.4 x 10 *. What mass of
(CH,) NHB. should the student dissolve in the (CH, N solution to turn it into a buffer with pH = 11.28?
You may assume that the volume of the solution doesn't change when the (CH,) NHB1 is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits.
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Transcribed Image Text:8. 9. 10 -4 A chemistry graduate student is given 100. mL of a 1.50M trimethylamine ((CH,) N) solution. Trimethylamine is a weak base with K, = 7.4 x 10 *. What mass of (CH,) NHB. should the student dissolve in the (CH, N solution to turn it into a buffer with pH = 11.28? You may assume that the volume of the solution doesn't change when the (CH,) NHB1 is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits. Submit Assign Continue O 2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Acces II
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