Which of the following solutions will have `pH = 10` at `298 K`?

Options

A. `1 xx 10^(-10)M HCI` solution
B. `1 xx 10^(-4)M NaOH` solution
C. `1xx10^(-10)M NaOH` solution
D. Both (a) and (b)

Answer

B

Explanation

a. `10^(-10)M HCI`, since `[H_(3)O^(o+)] lt 10^(-6)M`, so `pH` is less than `7`, because of the acidic solution.
b. `10^(-4) M NaOH`, since `[overset(Theta)OH] = 10^(-4)M , pOH =4, pH = 10`.
c. `10^(-10)M NaOH`, Since `[overset(Theta)OH] lt 10^(-6)M, pH` is slighly more tan `7` because of the basic solution.