PH

Definition

pH is a measure of the acidity or alkalinity of a solution. It's calculated as the negative logarithm (base 10) of the concentration of hydrogen ions in a solution.

Related terms

Acid:

A substance that donates protons or hydrogen ions and/or accepts electrons.

Base:

A substance that can accept protons or donate a pair of valence electrons.

Neutralization Reaction:

A chemical reaction in which an acid and base react quantitatively with each other to produce water and a salt.