Question

In a double displacement reaction:
A. Ions remains stable
B. Ions get liberated
C. Ions are exchanged
D. Ions are not created

Answer 1

Hint: First of all try to understand the definition of the double displacement reaction. From that definition try to answer the above question whether the ions are liberated or remain stable or the ions get exchanged or not created. These things can be analyzed from its definition. So try to answer this question with the suitable definition of the double displacement reaction.

Complete step by step answer:
 A double displacement reaction is a type of chemical reaction in which the ions of the reactants that are involved in that chemical reaction are changed or displaced to form the respective products of the chemical reaction. This is the definition of the double displacement reaction. This double displacement reaction usually results in the precipitation formation. The chemical bonds between the reactants are either covalent or ionic whose ions are exchanged between the reactant molecules in order to produce the products. Hence in a double displacement reaction the ions are exchanged.

Hence the option (C) is the correct answer.

Note: For example an aqueous sulfuric acid reacts with lithium hydroxide to produce lithium sulfate and water.
${{H}_{2}}S{{O}_{4}}+LiOH\to L{{i}_{2}}S{{O}_{4}}+{{H}_{2}}O$
In the above reaction the sulfate ion from the sulfuric acid is replaced with the hydroxide ion from the lithium hydroxide to form the products. The ions of the reactants are exchanged between each other to form the respective products. This type of reaction is known as the double displacement reaction.