Question

What is the pOH of a 0.025 M [H+] solution?
A) 0.94
B) 1.60
C) 12.40
D) 13.06

Answer 1

The answer is a because pOH is a used in lots of formula

Answer 2

Answer: C) 12.40

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: $[H^+]=0.025 M$

$pH=-log[0.025]$

$pH=1.6$

$1.6+pOH=14$

$pOH=12.40$

Thus pOH of the solution is 12.40