Question

Which two species are the anions in copper sulphate solution?

• A. Hydrogen ion and sulphate ion
• B. Copper ion and sulphate ion
• C. Copper ion and hydrogen ion
• D. Sulphate ion and hydroxide ion

Answer 1

The correct option is C Copper ion and hydrogen ion

Copper sulphate solution is obtained when copper sulphate salt is dissolved in water. During electrolysis, the copper sulphate salt $\left(CuS{O}_4\right)$ dissociates to give $C{u}^{2+}$ and $S{O}_4^{2-}$ ions. Simultaneously, water also undergoes dissociation to give $H^{+}$ and hydroxide ion $O{H}^{-}$ ions.

Hence, $C{u}^{2+}$ and $H^{+}$ are the cations released during the dissociation.