Question

Which displacement reaction is most likely to occur? Use the resources to help you. A. BaCl2 + Ca → CaCl2 + Ba

B. BaCl2 + Sr → SrCl2 + Ba

C. BaCl2 + 2Na → 2NaCl + Ba


D. BaCl2 + Mg → MgCl2 + Ba

Answer 1

option D is the correct answer

Answer 2

Answer: The correct option is C.

Explanation: Displacement reaction is defined as the reaction in which more reactive element displaces the less reactive metal in a chemical reaction.

General equation for this reaction is:

$AB+C\rightarrow CB+A$

To study these type of reactions, we require reactivity series.

The element lying above in the reactivity series will easily displace the element lying below it i the reactivity series.

Hence, from all the given reactions, only Sodium (Na) element displaces the Barium (Ba) element in the chemical reaction.

Reaction follows:

$BaCl_2+2Na\rightarrow 2NaCl+Ba$

Hence, the correct option is C.

Reactivity series is attached below.