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Acids and BasesMCQ

Acid-dissociation constants of two acids are listed in the table below. [VISUAL] A 20. mL sample of — Acids and Bases Chemistry Question

Question

Acid-dissociation constants of two acids are listed in the table below.

[VISUAL]

A 20. mL sample of a 0.10 M solution of each acid is titrated to the equivalence point with 20. mL of 0.10 M NaOH. Which of the following is a true statement about the pH of the solutions at the equivalence point?

A.

Solution 1 has a higher pH at the equivalence point because CH3CO2H is the stronger acid.

B.

Solution 1 has a higher pH at the equivalence point because CH3CO2H has the stronger conjugate base.

✓ Correct
C.

Solution 1 has a lower pH at the equivalence point because CH3CO2H is the stronger acid.

D.

Solution 1 has a lower pH at the equivalence point because CH3CO2H has the stronger conjugate base.

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