Question

What is the pOH of a solution that has a OH - concentration equal to 1.3x 10^-10

Answer 1

Answer: 9.88 (approx10)

Explanation:

The pOH of a solution is the negative logarithm of the hydroxide-ion concentration

Answer 2

Answer: pOH = 9.88

Explanation:pH or pOH is the measure of acidity or alkalinity of a solution.

pH is calculated by taking negative logarithm of hydrogen ion concentration.

Acids have pH ranging from 1 to 6.9, bases have pH ranging from 7.1 to 14 and neutral solutions have pH equal to 7.

$pH=-\log [H^+]$

$pOH=-\log[OH^-]$

Putting in the values:

$pOH=-\log[1.3\times 10^{-10}]$

$pOH=9.88$

$pH+pOH=9.88$

$pH=14-9.88=4.12$

Thus as pH is less than 7 the solution is acidic and pOH is 9.88.