Question

> Decomposition reactions can occur by (i) heat
(ii) electricity and (iii) sunlight.
Give two balanced reactions for each.​

Answer 1

Answer:

i) Heat:

CaCO3 --> CaO + CO2

ZnCO3 --> ZnO + CO2

ii) Electricity:

H2O --> H+ + OH-

NaCl --> Na+ + Cl-

iii) Sunlight:

6CO2 +12 H2O --> C6H12O6 +6H2O +6O2

H2 + Cl2 --> 2HCl

Hope this helps you.