Question

he pH of a solution is 2.0. Which statement is correct? Useful formulas include mc021-1.jpg, mc021-2.jpg, mc021-3.jpg, and mc021-4.jpg. The pOH of the solution is 12.0. The concentration of OH– ions is 1.0 mc021-5.jpg 10–2 M. The concentration of mc021-6.jpg ions is 100.0 M. The pOH of the solution is 16.0.

Answer 1

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Answer 2

Answer: The pOH of the solution is 12.0.

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 and pOH is calculated by taking negative logarithm of hydroxide ion concentration.

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

$pOH=-log{OH^-}$

$pH+pOH=14$

Given :$pH=2.0$

Thus $2=-\log [H^+]$

$[H^+]=10^{-2}M$

$2+pOH=14$

$pOH=12$

$12=-log{OH^-}$

$[OH^-]=10^{-12}M$