Question

22. Give one example each of the following decomposition reactions. Write one balanced
chemical equation in each case :
i) The reaction which occurs on passing electric current.
ii)
The reaction which occurs in the presence of sunlight.
iii)
The reaction which occurs lon heating of a substance.

Answer 1

Answer:

22.

i) 2H2O ----> 2H2 + O2

ii) 2HCl ------> H2 + Cl2

iii) 2KNO3 -----> 2KNO2 + O2

Hope that helps you.

Answer 2

i) 2H2O ----> 2H2 + O2

ii) 2HCl ------> H2 + Cl2

iii) 2KNO3 -----> 2KNO2 + O2

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