Answer
$[OH^-] = 3.162 \times 10^{-9}$;
It's a acid solution.
Work Step by Step
1. Knowing that [H+] is 1000 times greater than [OH-], and [H+] * [OH-] = $10^{-14}$.
$[H^+] = 1000 \times [OH^-]$
$[H^+] \times [OH^-] = 10^{-14}$
2. Find $[OH^-]$:
$1000 \times [OH^-] \times [OH^-] = 10^{-14}$
$[OH^-]^2 = 10^{-17}$
$[OH^-] = \sqrt {10^{-17}}$
$[OH^-] = 3.162 \times 10^{-9}$
3. Because $[H^+] > [OH^-]$, the solution is considered acid.
