Question

The reaction given below is an example of:
$Ba\left(OH{)}_2\right(s)+2CuCNS(s)\to Ba(CNS{)}_2\left(aq\right)+2CuOH\left(s\right)$

• A. Combination reaction
• B. Decomposition reaction
• C. Displacement reaction
• D. Double displacement reaction

Answer 1

The correct option is D Double displacement reaction

In the above given reaction, there is an exchange of ${\text{OH}}^{-}$ and ${\text{CNS}}^{-}$ ions which results in the formation of product. The reactions in which there is an exchange of ions to form products is called double decomposition reactions. Hence, given reaction is an example of double decomposition reaction.