# What is the concentration of H+ in a 0.121 M HCl solution?

May 26, 2018

The concentration of ${\text{H}}^{+}$ will be $\text{0.121 M}$.
As $\text{HCl}$ is a strong acid and hence a strong electrolyte, it will dissociate as
${\text{HCl" rarr "H"^+ + "Cl}}^{-}$
So, the concentration of ${\text{H}}^{+}$ will be $\text{0.121 M}$ (the same as $\text{HCl}$).