The acid present in lemon.

Classify the following into acids, bases and salts:

$\mathrm{NaCl}$

Classify the following into acids, bases and salts:

${\mathrm{NaHCO}}_3$

Classify the following into acids, bases and salts:

${\mathrm{H}}_2{\mathrm{SO}}_4$

Classify the following into acids, bases and salts:

$\mathrm{Ca}{\left(\mathrm{OH}\right)}_2$

Classify the following into acids, bases and salts:

$\mathrm{HCl}$