A buffer contains the weak acid HA and its conjugate base A-. the weak acid has a p Ka of 4.82 and the buffer has a pH of 4.25. Which statement is true of the relative concentration of the weak acid and its conjugate base in the buffer?

a) [HA} > [A-]

b) [Ha} < [A-]

c) [HA]=[A-]

Question

Chemistry

Franco Patrick

14 May, 23:44

A buffer contains the weak acid HA and its conjugate base A-. the weak acid has a p Ka of 4.82 and the buffer has a pH of 4.25. Which statement is true of the relative concentration of the weak acid and its conjugate base in the buffer?

a) [HA} > [A-]

b) [Ha} < [A-]

c) [HA]=[A-]

+4

Answers (1)

Know the Answer?

Yusuf Sutton · Answer 1

I think the correct answer is A. A buffer is a substance that resists small change in the acidity of a solution when an acid or base is added to the solution. Usually, a buffer involves a weak acid or a weak alkali and one of its salt.

A buffer contains the weak acid HA and its conjugate base A-. the weak acid has a p Ka of 4.82 and the buffer has a pH of 4.25. Which statement is true of the relative concentration of the weak acid and its conjugate base in the buffer?a) [HA} > [A-]b) [Ha} < [A-]c) [HA]=[A-]

A buffer contains the weak acid HA and its conjugate base A-. the weak acid has a p Ka of 4.82 and the buffer has a pH of 4.25. Which statement is true of the relative concentration of the weak acid and its conjugate base in the buffer?

a) [HA} > [A-]

b) [Ha} < [A-]

c) [HA]=[A-]