Question

The ph of an aqueous solution at 25.0°c is 10.66. what is the molarity of h+ in this solution? the ph of an aqueous solution at 25.0°c is 10.66. what is the molarity of h+ in this solution? 4.6 à 10-4 3.3 2.2 à 10-11 1.1 à 10-13 4.6 à 1010

Answer 1

Answer: The molarity of $H^+$ in this solution is $2.2\times 10^{-11}M$

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.

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

Given : pH = 10.66

Putting in the values:

$10.66=-\log[H^+]$

$[H^+]=10^{-10.66}$

$[H^+]=2.2\times 10^{-11}$

Thus the molarity of $H^+$ in this solution is $2.2\times 10^{-11}M$