CHEM1011-CHEM1031-CHEM1051-Chemistry 1A (T1 2025) Course Materials & Test Answers | moodle.telt.unsw.edu.au

Which of the following best describes the pH values at points A, B, and C on this titration curve?

titration curve for a weak acid with a strong base

A is the pH at the equivalence point;

B is the pH at the half-equivalence point and equals the p

K_a of the weak acid;

C is the pH of the solution of the weak acid before adding NaOH

✅

A is the pH at the half-equivalence point;

B is the pH at the equivalence point;

C is the pH of the solution of the weak acid before adding NaOH and equals the pK_a of the weak acid

❌

A is the pH at the equivalence point;

B is the pH at the half-equivalence point;

C is the pH of the solution of the weak acid before adding NaOH and equals the pK_a of the weak acid

❌

A is the pH at the equivalence point and equals the pK_a of the weak acid;

B is the pH at the half-equivalence point;

C is the pH of the solution of the weak acid before adding NaOH

❌

A is the pH at the half-equivalence point and equals the pK_a of the weak acid;

B is the pH at the equivalence point;

C is the pH of the solution of the weak acid before adding NaOH

❌

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