Question

Select the statements that describe a method which can be used to make a buffer. (A) Partially neutralize a strong acid solution by addition of a strong base.(B) Add appropriate quantities of weak acid and its conjugate base to water.(C) Partially neutralize a weak acid solution by addition of a strong base.(D) Partially neutralize a weak base solution by addition of a strong acid.(E) Partially neutralize a strong base solution by addition of a strong acid.

Answer 1

Answer:

(B) Add appropriate quantities of weak acid and its conjugate base to water.

(C) Partially neutralize a weak acid solution by addition of a strong base.

(D) Partially neutralize a weak base solution by addition of a strong acid.

Explanation:

A buffer is an aquos solution in which you mix a weak base and a weak acid in order to create a solution that would react as neutralizer when strong acids or bases are added to it, the buffers are used to keep the ph of substances stable by adding a buffer to those substances. The only way to create a buffer is by mixing weak bases with its conjugate weak acids in water, or the other way around. So the only one from the options that would be correct would be (B) Add appropriate quantities of weak acid and its conjugate base to water.

Answer 2

Answer:

B) Add appropriate quantities of weak acid and its conjugate base to water.

C) Partially neutralize a weak acid solution by addition of a strong base.

(D) Partially neutralize a weak base solution by addition of a strong acid.

Explanation:

A buffer solution is made by a weak acid and its conjugated base or a weak base and its conjugated acid.

If you add a weak acid to water, you can adjust the pH of the buffer solution by adding a strong base.

If ypu add a weak base to water, you can adjust the pH of the buffer solution by adding a strong acid.