Question

One litre of a buffer solution contains `0.1 M NH_(4)OH`. The `p^(kb)` of base is `5.pH` value of the solution is
A. `9`
B. 10
C. 4
D. 6

Answer 1

Correct Answer - B
`p^(OH) = p^(kb) + "log" (["Salt"])/("Base")`
`p^(OH) = 5 + "log" (0.01)/(0.110), p^(oh) = 5 + "log"10^(-1)`
`P^(OH) = 4, p^(H) = 10`