Write one equation each for the decomposition reactions where ene…

Question

Write one equation each for the decomposition reactions where energy is supplied in the form of:

Heat.
Light.
Electricity.

✓

Answer

Decomposition reaction where heat is supplied for energy:

$2\text{Pb}(\text{NO}_3)_2(\text{s})\xrightarrow[\text{Decomposition}]{\ \ \ \ \ \ \ \ \ \ {\text{Heat}}\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ }2\text{PbO(s)}\ \ \ \ +\ \ \ \ 4\text{NO}_2(\text{g})\ \ \ \ \ +\ \ \ \ \text{O}_2(\text{g})\\ ^\text{Lead Nitrate} \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ^\text{Lead monoxide} \ \ \ \ \ \ \ ^\text{Nitrogen Dioxide}\ \ \ \ \ \ \ \ \ \ ^\text{Oxygen}\\ ^\text{(Colourless)}\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ^\text{(Yellow)}\ \ \ \ \ \ \ \ \ \ \ \ \ ^\text{(Brown Fumes)}$

Decomposition reaction where light is supplied for energy:

$2\text{AgCl}(\text{s})\xrightarrow[\text{Decomposition}]{\ \ \ \ \ \ \ \ \ \ {\text{Light}}\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ }2\text{Ag(s)}\ \ \ \ +\ \ \ \ \text{Cl}_2(\text{g})\\ ^\text{Silver Chloride} \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ^\text{Silver} \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ^\text{Chlorine}\\ \ \ ^\text{(White)}\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ^\text{(Grey-white)}\ \ \ \ \ \ \ ^\text{(Yellowish-green)}$

Decomposition reaction where electricity is supplied for energy:

$2\text{H}_2\text{O}\text{}(\text{l})\xrightarrow[\text{Decomposition}]{\ \ \ \ \ {\text{Electricity}}\ \ \ \ \ \ \ \ }\ \ 2\text{H}_2(\text{g})\ \ \ +\ \ \text{O}_2(\text{g})\\ ^\text{Water} \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ^\text{Hydrogen} \ \ \ \ \ \ \ \ \ ^\text{Oxygen}$