Question

Which of the following is a decomposition reaction?

BaO + H2O → Ba(OH)2
CH4 + O2 → CO2 + H2O
CaO + CO2 → CaCO3
PbCO3 → PbO + CO2

Answer 1

PbCO3 → PbO + CO2

Step-by-step explanation:

Answer 2

PbCO3 → PbO + CO2

Step-by-step explanation:

Decomposition reaction involves the breakdown of a single large chemical compound into two or more smaller ones.

PbCO3 → PbO + CO2

From the above equation, we can clearly see that PbCO3 breaks down to form PbO and CO2