Question

Bleaching powder is an example of:

• A. normal salt
• B. double salt
• C. mixed salt
• D. complex

Answer 1

Answer: (C)

The correct option is B mixed salt
Mixed salt : A mixed salt contains more than one cation or an ion other than hydrogen $\left(H^{+}\right)$ or hydride $\left(H^{-}\right)$ ions. Bleaching powder, $CaOC{l}_2$, is a mixed salt since though it contains only one cation $\left(C{a}^{2+}\right)$, it also contains two anions $C{l}^{-}$ and $OC{l}^{-}$.
Bleaching powder is a yellowish white powder prepared by passing chlorine gas over dry slaked lime.
$Ca(OH{)}_2+C{l}_2\to CaOC{l}_2+H_{2}O$