# What are the pH of acids and bases?

Aug 5, 2017

A scale that measures the concentration of hydrogen ions in an aqueous solution.

#### Explanation:

pH is a logarthmic scale that is used to measure the concentration of hydrogen ions in an aqueous solution. It is used towards identifying how $\text{acidic}$ or $\text{basic}$ a solution is.

Acids are solutions with a low pH -> having a pH of less than $7$.
Bass are solutions with a high pH -> having a pH of higher than $7$.
There are also neutral solutions with a pH of $7$.

I'm not explaining acids and bases so I won't talk about them that much.

pH can be calculated by using the formula: $p H = - \log \left[{H}^{+}\right]$. Where:
=> $p H$ is the pH. Simple as that. No units - pH is not a unit.
=> $\log$ is the logarithm... because pH is a logarthmic scale.
=> ${H}^{+}$ the concentration of hydrogen ions.

There are also things called pH indicators, that when reacting with a solution, will change a certain colour. Helpful to determine how acidic/basic an acid/base is.

I think that's the gist of it.

Hope this helps :)