1.

A and B are two solutions, each of which has a volume of1L. The solution A contains 1 mol of NH_4CI and 1 mol < NaOH, while the solution B contains 1 mol of NH_ 4Cl and 1 mol of NH_3 . If pH values of the solutions A and are (pH) A and (pH) 8 respectively and pK b for NH_3 4.74, then the ratio of (pH)_A and (pH)_B is-

Answer»

1.85
1.25
2.01
2.46

Answer :B


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