Question

3.(16.3) Identify all the correct statements about an acid-base buffer solution. I. It can be prepared by combining a strong acid with a salt of its conjugate base. II. It can be prepared by combining a weak acid with a salt of its conjugate base. III. It can be prepared by combining a weak base with its conjugate acid. IV. The pH of a buffer solution does not change when the solution is diluted. V. A buffer solution resists changes in its pH when an acid or base is added to it. a. I, II, and IV d. I, II, IV, and V b. II, III, and V e. II, III, and IV TA c. II, III, IV, and V AT20+ Metall 4.(16.3) Which of the following cannot be mixed together in water to produce a buffer solution? a. NH3 and HCI d. HCN and NaOH b. HF and KF e. HNO3 and NaNO3 c. HCIO3 and NaClO3 5.(16.4) Sketch a titration curve for titration of a weak acid with a strong base and label the following areas in the curve: a) before equivalence point, b) equivalence point, and c) after equivalence. noisloa e lo Hasega vd CEE od o bortimotobaw bibelow to SeoT (el).

Answer 1

Question 3.

The statements II, III, IV, and V are correct, hence the answer is option C.

Question 4.

HNO3 (Strong acid) and NaNO3 can not be mixed together in water to produce a buffer solution, hence the answer is option E.