Exams › NEET › Chemistry

The function of 'buffer solution' is:

1. to increase the pH value in chemical reaction
2. to decrease the pH value on chemical reaction
3. to increase or decrease the pH value of according the need
4. to keep the pH value constante in chemical reaction

Correct answer: to keep the pH value constante in chemical reaction

Solution

A buffer solution is designed to maintain a nearly constant pH by neutralizing small additions of acid or base. That is why its main function is to keep the pH stable in a chemical reaction.

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