Part A)
[propionate] = 0.060M
[acid] = 0.080M
pKa of propionic acid = 4.88
The solution is a buffer and its pH is calculated using Hendersen equation as
pH = pKa + log [ conjugate base]/[acid]
= 4.88+ log 0.060/0.080
= 4.755
Part B
this is a base and conjugate acid buffer
[methylamine] = 0.080 M
[ salt] = 0.11 m and
pKb of methylamine = 4.19
The pOH of this buffer by Hendersen equation is
pH = pKb + log [salt]/[base]
= 4.19 + log 0.11/0.08
= 4.328
and pH = 14-pOH= 14- 4.328 =9.6717
Part C
[acetate] = 0.160M
[acid] = 0.20M
pKa of acetic acid = 4.75
The solution is a buffer and its pH is calculated using Hendersen equation as
pH = pKa + log [ conjugate base]/[acid]
= 4.75+ log 0.160/0.20
= 4.653
Part A Calculate the pH of a solution that is 0.060 M in potassium propionate (C2...
Part A Calculate the pH of a solution that is 0.055 M in potassium propionate (C H3COOK or KC Hs02) and 0.080 Mi propionic acid (CH3COOH or HC3H5O2). Express your answer to two decimal places. Yo AS Roe? pH = Submit Request Answer Part B Calculate the pH of a solution that is 0.075 Min trimethylamine. (CH), N. and 0.13 Min trimethylammonium chloride. (CH3)2NHCI). Express your answer to two decimal places. Activity Details Part Calculate the pH of a solution...
Calculate the pH of (a) a solution that is 0.060M in potassium propionate (C2H5COOK or KC3H5O2) and 0.085M in proprionic acid (C2H5COOH or HC3H5O2); (b) a solution that is 0.075M in trimethylamine, (CH3)3N, and 0.10M in trimethylammonium chloride, (CH3)3NHCl; (c) a solution that is made by mixing 50.0 mL of 0.15M acetic acid and 50.0 mL of 0.20M sodium acetate.
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