Question

What do you understand by the terms acid and base.

Answer 1

$\text{Acid}$ are molecule or ions capable of donating a proton i.e $H^{+}$.

$\text{Example:}$ $HCl,C{H}_{3}COOHetc.$

$\text{Base}$ are molecule or ions capable of accepting a proton.
$\text{Example:}$ $NaOH,N{H}_{3}etc.$