# What is the [H^+] of a solution with a pH of 6.6?

Jun 17, 2016

$\left[{H}^{+}\right] = {10}^{- 6.6}$ $m o l \cdot {L}^{-} 1$

#### Explanation:

$p H = - {\log}_{10} \left[{H}^{+}\right]$ by definition.

If $p H = 6.6$, then to get $\left[{H}^{+}\right]$ we take the antilogarithm:

$\left[{H}^{+}\right]$ $=$ ${10}^{- 6.6}$ $m o l \cdot {L}^{-} 1$ with respect to ${H}^{+}$ or ${H}_{3} {O}^{+}$, an equivalent representation.

This solution is very slightly acidic. I don't think you could taste the difference.