# What is the pH or a solution with [H^+] = 7.0 times 10^-7?

Feb 1, 2017

pH of $6.2$.

#### Explanation:

The pH of a solution has a range of 0-7. Each step having a logarithmic relation.

Thus we use the following equation: $p H = - \log \left[{H}^{+}\right]$

$p H = - \log \left[{H}^{+}\right]$

$= - \log \left[\left(7 \times {10}^{-} 7\right)\right]$

$= 6.15490196$

$= 6.2$

Therefore, the acid has a pH of $6.2$. This number is very close to $7$, so we can conclude it is a weak acid.

Hope this helps :)