Chemistry

Chemistry

Problem

At

40\,^{\circ}\mathrm{C}

, the ion-product constant of water is

K_w = 2.92\times10^{-14}

. A

0.20\,\text{M}

solution of the weak base

\mathrm{BOH}

has

K_b = 2.2\times10^{-5}

. What is the pH of the solution at

40\,^{\circ}\mathrm{C}

? a) 11.52 b) 10.86 c) 11.32 d) 10.46

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