Question

State the type of reactions each of the following represent and balance the ones

that are not balanced .

(a) Cl2 + 2KBr → 2KCl +Br2

(b) 2KClO3 →2KCl + 3O2

(c) CaCO3→CaO+CO2​

Answer 1

Answer:

(a)                      Cl2 + 2KBr → 2KCl +Br2

This equation is already balanced. It is a displacement reaction.

(b)                      2KClO3 →2KCl + 3O2

This equation is already balanced. It is a decomposition reaction.

(c)                      CaCO3→CaO+CO2​

This equation is already balanced. It is a decomposition reaction.

Answer 2

Answer:

a) Cl2 + 2KBr → 2KCl +Br2

Explanation:

Displacement reactions occur when a metal from the electrochemical series is mixed with the ions of a metal lower down in the electrochemical series. The atoms of the more reactive metal push their electrons on to ions of the less reactive metal.