The chemical reaction between barium chloride and sodium sulphate is an example of
combination reaction
decomposition reaction
displacement reaction
double displacement reaction
The chemical reaction between barium chloride and sodium sulphate is an example of
combination reaction
decomposition reaction
displacement reaction
double displacement reaction
The correct option is D double displacement reaction
Explanation for correct option:
D. Double displacement reaction: Precipitation reaction is a type of double displacement reaction in which one ion of both the reactants is exchanged to form two new products.
When a solution of barium chloride is added to sodium sulphate solution, the exchange of ions takes place between the reactants. The sulphate ions and chloride ions are exchanged between barium and sodium forming barium sulphate (a white precipitate) and sodium chloride, respectively.
The chemical equation for the reaction is:
Barium sulphate is precipitated out from the solution while sodium chloride remains in the solution. Therefore, this is an example for a precipitation reaction.
Explanations for incorrect options:
A. Reactions in which a single product is obtained from more than one reactant are called combination reactions. Since there is more than one product formed in this reaction, it is not a combination reaction.
B. In decomposition reactions, a single reactant breaks down into more than one product. Since there is more than one reactant in this reaction, it is not a decomposition reaction.
C. In displacement reactions, a metal displaces another metal from its salt solution. Only displacement of one metal takes place in a displacement reaction. In this reaction, both the metals are displaced from the solution.
Hence, the correct answer is (D) double displacement reaction. The chemical reaction between barium chloride and sodium sulphate is an example of a double displacement reaction.
double displacement reaction
Explanation for correct option:
D. Double displacement reaction: Precipitation reaction is a type of double displacement reaction in which one ion of both the reactants is exchanged to form two new products.
When a solution of barium chloride is added to sodium sulphate solution, the exchange of ions takes place between the reactants. The sulphate ions and chloride ions are exchanged between barium and sodium forming barium sulphate (a white precipitate) and sodium chloride, respectively.
The chemical equation for the reaction is:
Barium sulphate is precipitated out from the solution while sodium chloride remains in the solution. Therefore, this is an example for a precipitation reaction.
Explanations for incorrect options:
A. Reactions in which a single product is obtained from more than one reactant are called combination reactions. Since there is more than one product formed in this reaction, it is not a combination reaction.
B. In decomposition reactions, a single reactant breaks down into more than one product. Since there is more than one reactant in this reaction, it is not a decomposition reaction.
C. In displacement reactions, a metal displaces another metal from its salt solution. Only displacement of one metal takes place in a displacement reaction. In this reaction, both the metals are displaced from the solution.
Hence, the correct answer is (D) double displacement reaction. The chemical reaction between barium chloride and sodium sulphate is an example of a double displacement reaction.
