# What is the pH of a 7.5x10^-3 M3 H^+# solution?

Aug 31, 2016

$p H = 2.13$
$p H = - {\log}_{10} \left[{H}_{3} {O}^{+}\right]$
$=$ $- {\log}_{10} \left(7.5 \times {10}^{-} 3\right)$
$=$ $- \left(- 2.13\right)$ $=$ $2.13$