Question

Identify the cations and anions in the following compounds

• ${\mathrm{CH}}_3\mathrm{COONa}$
• ${\mathrm{NH}}_3$
• ${\mathrm{NH}}_4\mathrm{Cl}$
• ${\mathrm{AlSO}}_{4_{}}$

Answer 1

An ion can be defined as a chemical species which holds a positive and negative charge of some magnitude.

The ion with a negative charge is called are called anions and the ions that have a positive charge are called cations

The anion and cation in ${\mathrm{CH}}_3\mathrm{COONa}$ is -${\mathrm{CH}}_3{\mathrm{COO}}^{-}$and ${\mathrm{Na}}^{+}$respectively

The anion and cation in ${\mathrm{NH}}_3$ is- its a compound.

The anion and cation in ${\mathrm{NH}}_4\mathrm{Cl}$ is -${{\mathrm{NH}}_4}^{+}$and ${\mathrm{Cl}}^{-}$respectively

The anion and cation in-${\mathrm{Al}}_2{\mathrm{SO}}_{4_{}}$is -${\mathrm{Al}}^{2+}$and ${\mathrm{SO}}_{4^{-}}$respectively