# What is the concentration of hydrogen ions in a solution of pH = 4.0?

Jun 17, 2017

$\text{concentration of H"^+ = "0.0001M}$

#### Explanation:

"pH" = -log("concentration of H"^+)

$\mathmr{and} , {10}^{-} {\text{pH" = "concentration of H}}^{+}$

From the given info

$\text{pH}$ = 4

$\therefore {10}^{-} 4 = 0.0001$

$\text{concentration of H"^+ = "0.0001M}$