When 0.02 mole of an alkali is added to an acid buffer , the pH changes from 4.75to 4.8 the buffer capacityis

When 0.02 mole of an alkali is added to an acid buffer , the pH change

1.	When 0.02 mole of an alkali is added to an acid buffer , the pH changes from 4.75to 4.8 the buffer capacityis
Answer» `2.5` `0.25` `0.4` `0.025` SOLUTION :BUFFER CAPACITY=`(N)/(Delta pH)=(0.02)/(0.05)= 0.4`