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Buffer solutions have constant acidity a...

Buffer solutions have constant acidity and alkalinity because

A

These give unionized acid or base on reaction with added acid or alkali

B

Acids and alkalies in these solutions are shielded from attack by other ions

C

They have large excess of `H^(+)` or `OH^(-)` ions

D

They have fixed value of pH

Text Solution

Verified by Experts

The correct Answer is:
A
On adding small amount of acid `(H^(+))`and base `(OH^(-))`weak acid or weak base will be form respectively.
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