Chapter 16.4, Problem 6CP

What is the concentration of $\text{Ca}{\left(\text{OH}\right)}_{\text{2}}$ in a solution at $\text{25°C}$ if the pH is 9.01?

a)

$1.0 \times {10}^{-5}M$

b)

$5.1 \times {10}^{-6}M$

c)

$2.0 \times {10}^{-5}M$

d)

$9.8 \times {10}^{-9}M$

e)

$4.9\times {10}^{-9}M$