Question

What is a pH meter?

Answer 1

pH meter:

• pH meter is an electrical device that is used to measure Hydrogen(${\mathrm{H}}^{+}$) ion activity in a solution.
• pH value of a solution indicates its acidity or basicity(alkalinity).

$$\begin{gathered} \mathrm{pH}=7\to \mathrm{Neutral}\mathrm{solution} \\ \mathrm{pH}>7\to \mathrm{Basic}\mathrm{solution} \\ \mathrm{pH}<7\to \mathrm{Acidic}\mathrm{solution} \end{gathered}$$