# Question #ae736

Sep 5, 2016

An increase in pH means that the solution is becoming less acidic and more basic.

#### Explanation:

pH means parts Hydrogen. It is a measure of the concentration of Hydrogen ions in the solution.

pH is the negative log of the hydrogen ion concentration.

pH = $- \log \left\{{H}^{+}\right\}$

Since pH is the negative log it means that the lower the pH the more acid the solution is

Example if the solution is 10% ( 10/100) or .1 ${H}^{+}$ The the pH is 1

1 = $- \log \left({10}^{-} 1\right)$

The log is the exponent of the hydrogen ion concentration so the log is -1 but pH is the negative log so $- 1 \times - 1$ = 1

Example if the solutions is only 1% ( 1/100) or .01 $\left\{{H}^{+}\right\}$ The the pH increases to 2

2 = $- \log \left({10}^{-} 2\right)$

So as the pH number goes up in value the hydrogen ion concentration goes down, and the solution becomes less acidic.