Question

What is the pH of the product resulting from the reaction of a weak base and a weak acid?

A)acidic

B)basic

C)neutral

D)cannot be determined

Answer 1

Weak acid:

An acid which is not completely ionized or completely dissociated on dissolving water is called weak acid.

Strong acid:

All strong acids are strong electrolytes because they have following properties:

1. They are ionic compounds.
2. They are completely separates into their ions when dissolved in water.
3. In solution form they conduct electricity due to present of ions but in solid form means neutral molecule does not conduct electricity.

Weak base:

A base which is not completely ionized or completely dissociated on dissolving water is called weak base.

Strong base:

All strong bases are strong electrolytes because they have following properties:

1. They are ionic compounds.
2. They are completely separates into their ions when dissolved in water.
3. In solution form they conduct electricity due to present of ions but in solid form means neutral molecule does not conduct electricity.

When the salt is dissolved in water it produces positive and negative ions which depend on the following points:

1. When the salt of strong acid and base is hydrolyze it gives neutral solution means this salt did not hydrolyze.
2. When the salt of strong acid and weal base is hydrolyzing it gives acidic solution.
3. When the salt of weak acid and strong base is hydrolyzing it gives basic solution.
4. When salt of weak acid and weak base is hydrolyzing it gives hydrogen and hydroxide both ions and the nature of solution is depending on the relative weakness of the acid and base.

When weak acid is reacts with weak base it form salt of salt of weak acid and weak base is hydrolyzing it gives hydrogen and hydroxide both ions and the nature of solution is depending on the relative weakness of the acid and base.

The pH of the product resulting from the reaction of a weak base and a weak acid cannot be determined.

Thus the correct answer is d)