1.

10 mL of 0.1 M-HCI solution is added in 90 mL of a buffer solution having 0.1 M-NH_(4)OH and 0.1 M-NH_(4)CI. The percentage change in pH of solution is (K_(a) " of " NH_(4)^(+) = 5xx10^(-10))[log 2 = 0.3] :

Answer»

`(10)/(4.7) %` INCREASE
`(10)/(4.7) %` DECREASE
`(10)/(9.3) %` increase
`(10)/(9.3) %` decrease

Answer :d


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