Question

give one example d decomposition reaction which is carried in the presence of
i} electrical energy
ii} sunlight
iii} heat energy

Answer 1

Answer:

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Answer 2

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Answer:

Decomposition reaction is a reaction in which a single reactant breaks down to form two or more products. this reaction is opposite to combination reaction.

(I) in presence of electrical energy,

This type of decomposition is known as electrolysis, this reaction involves the use of electrical energy for decomposition of the reactant molecules

2H2O •••••• > 2H2 + O2

2NaCl •••••• > 2Na + Cl2

(II) in presence of Sunlight,

this type of decomposition is known as photolysis for photochemical decomposition, this reaction involves the use of light energy for the sunlight for decomposition of the reactant molecules

2AgCl •••••• > 2Ag + Cl2

2AgBr •••••• > 2Ag + Br2

(III) in presence of heat energy,

this type of decomposition is known as thermal decomposition, this reaction use the energy in the form of heat for decomposition of the reactant

CaCo3 ••••••• > CaO + Co2

2FeSo4 •••••• > Fe2O3 + SO2 + SO3

2Pb(NO3)2 •••••• > 2PbO + 4NO2 + O2

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