Question

Measurements show that the ph of a particular lake is 4.0. What is the hydrogen ion concentration of the lake?

Answer 1

Answer: Hydrogen ion concentration of the lake is $10^{-4}M$

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. Acids have pH ranging from 1 to 6.9 and bases have pH ranging from 7.1 to 14.

To calculate the pH of the solution, we use the equation:

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

We are given:

pH = 4.0

Putting values in above equation, we get:

$4.0=-\log[H^+]$

$[H^+]=10^{-4.0}$

$[H^+]=10^{-4}$

Thus hydrogen ion concentration of the lake is $10^{-4}M$