Chemistry

Problem

0.10\,\text{M}

solution of a weak acid HA (

K_a = 1.0 \times 10^{-5}

) is mixed in equal volume with a

0.10\,\text{M}

solution of a weak base B (

K_b = 1.0 \times 10^{-6}

). Without performing detailed calculations, predict whether the pH of the resulting solution at

25^\circ\,\text{C}

will be less than 7, equal to 7, or greater than 7, and justify your prediction in one sentence.