CHM142 Exam 4 Review 2024/2025 with Correct Answers

2/26/25, 11:56 AM CHM142 Exam 4 Review 2024/2025 with Correct Answers Flashcards | Quizlet




CHM142 Exam 4 Review 2024/2025 with Correct
Answers

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Terms in this set (26)


If a buffer solution is 0.150 5.20
M in a weak acid (Ka = 2.3
× 10-5) and 0.560 M in its
conjugate base, what is
the pH?




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, 2/26/25, 11:56 AM CHM142 Exam 4 Review 2024/2025 with Correct Answers Flashcards | Quizlet


How could you make a -Partially neutralize a weak acid solution by addition
buffer? (Select all that of a strong base.
apply) -Partially neutralize a weak base solution by addition
of a strong acid.
-Partially neutralize a weak -Add appropriate quantities of weak acid and its
acid solution by addition conjugate base to water.
of a strong base.
-Partially neutralize a
strong acid solution by
addition of a strong base.
-Partially neutralize a
strong base solution by
addition of a strong acid.
-Partially neutralize a weak
base solution by addition
of a strong acid.
-Add appropriate
quantities of weak acid
and its conjugate base to
water.

a) Calculate the change in a) -0.07
pH when 8.00 mL of 0.100 b) 0.07
M HCl(aq) is added to
100.0 mL of a buffer
solution that is 0.100 M in
NH3(aq) and 0.100 M in
NH4Cl(aq). A list of
ionization constants can
be found here.


b) Calculate the change in
pH when 8.00 mL of 0.100
M NaOH(aq) is added to
the original buffer
solution.



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