Question

The pH of a sample of vinegar is 3.76. Calculate the concentration of hydrogen ion in it.

Answer 1

Given, pH
= 3.76
It is known that,
$pH=-log\left[H^{+}\right]\Rightarrow log\left[H^{+}\right]=-pH\Rightarrow \left[H^{+}\right]=antilog(-pH)=antilog(-3.76)=1.74\times {10}^{-4}M$
Hence, the concentration of hydrogen ion in the given sample of vinegar is $1.74\times {10}^{–4}M$.