Given that for water at 25 °C is

CHEMISTRY · Multi-part · A Level · Chemistry · Acids and bases · Acids and bases

Problem

Given that

K_{\text{w}}

for water at 25 °C is

1.0 \times 10^{-14}

, and that

K_{\text{w}} = [\text{H}^+][\text{OH}^-]

, calculate

[\text{OH}^-]

for the following solutions: (a) a solution of NaOH with a concentration of 0.10

\text{mol dm}^{-3}

(b) a solution with

[\text{H}^+] = 4.65 \times 10^{-4} \text{ mol dm}^{-3}