Tell me anything you know about pH

pH is a measure of the hydrogen ion concentration ($[H^+]$) in an aqueous solution, indicating its acidity or basicity. It is defined by the formula:

$$pH = -\log_{10}[H^+]$$

The pH scale typically ranges from 0 to 14, where a pH less than 7 indicates an acidic solution, a pH greater than 7 indicates a basic (or alkaline) solution, and a pH of 7 indicates a neutral solution.