Which of the following statements concerning aqueous solutions of salts is FALSE? A)For any salt of a strong acid and a strong base,the pH will be about 7. B)For any salt of a strong acid and a weak base,the pH will be 7. D)For any salt of a weak acid and a weak base,the pH will be about 7. E)Salt solutions can have a pH of 7.

Question

Which of the following statements concerning aqueous solutions of salts is FALSE?
A)For any salt of a strong acid and a strong base,the pH will be about 7.
B)For any salt of a strong acid and a weak base,the pH will be <7.
C)For any salt of a weak acid and a strong base,the pH will be >7.
D)For any salt of a weak acid and a weak base,the pH will be about 7.
E)Salt solutions can have a pH of 7.

Quizplus · Accepted Answer

The statement that is false is A, since not all salts of strong acid and strong base have a pH of 7. For example, the salt NaCl has a neutral pH of 7, but the salt NH4Cl has an acidic pH of around 5.5. The other statements are true: B is true because the conjugate acid of a weak base will hydrolyze water and produce H3O+ ions, lowering the pH. C is true because the conjugate base of a weak acid will hydrolyze water and produce OH- ions, raising the pH. D is true because salts of weak acids and bases will produce a neutral solution if the acid and base are equally weak. E is true because some salts, such as NaCl, have a pH of 7 due to no acidic or basic properties.

Which of the Following Statements Concerning Aqueous Solutions of Salts