A solution is prepared at 25 °c that is initially 0.43M in methylamine (CH,NH,), a weak base with K,=4.4 x 10 , and o.13M in methylammonium bromide (CH,NH, Br). Calculate the pH of the solution. Round your answer to 2 decimal places. pH = 0

Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter15: Solutions Of Acids And Bases
Section: Chapter Questions
Problem 15.121QE: A solution is made by diluting 25.0 mL of concentrated HCl (37% by weight; density = 1.19 g/mL) to...
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A solution is prepared at 25 °C that is initially 0.43.M in methylamine (CH,NH,),
a 4, and 0.13M in methylammonium bromide
a weak base with K,=4.4 × 10
(CH,NH,Br). Calculate the pH of the solution. Round your answer to 2
decimal places.
pH
Transcribed Image Text:A solution is prepared at 25 °C that is initially 0.43.M in methylamine (CH,NH,), a 4, and 0.13M in methylammonium bromide a weak base with K,=4.4 × 10 (CH,NH,Br). Calculate the pH of the solution. Round your answer to 2 decimal places. pH
Expert Solution
Step 1

Given: Concentration of CH3NH2 = 0.43 M

Concentration of CH3NH3Br = 0.13 M

And Kb of CH3NH2 = 4.4 × 10-4 

 

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