Step 1:

The buffered solution contains and .

of the is .

Definition of pH:

.

(a) Case(i) :

The statement is False.

Buffer capacity, β, is a quantitative measure of the resistance of a buffer solution to pH change on addition of hydroxide ions

If the concentration of and are equal then .

A solution containing 0.10 M of and 0.10 M of has .

A solution containing 1.0 M of and 1.0 M of has .

Buffering capacity depends on infinitesimal amount of added base.

A solution containing 0.10 M of and 0.10 M of has less buffering capacity when compared to solution containing 1.0 M of and 1.0 M of .

Step 2:

(b) Case (ii):

The statement is False.

If then ratio of ,

then pH is smaller than .

Step 3:

(c) Case(iii):

The statement is True.

Adding to the initial buffer solution would make the ratio resulting decrease in pH.

Step 4:

(d) Case(iv):

The statement is False.

If , then pH will increase.

Step 5:

(e) Case(v):

The statement is true.

If then

Solution:

The statement (c) and (e) are true.