1.

Buffer solutions have constant acidity and alkalinity because

Answer»

These give unionized acid or base on reaction with added acid or alkali
Acids and alkalies in these SOLUTIONS are shielded from ATTACK by other ions
They have large excess of `H^(+)` or `OH^(-)` ions
They have fixed value of pH

Solution :On adding SMALL AMOUNT of acid `(H^(+))` and base `(OH^(-))`, weak acid or weak base will be form respectively.


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