Question

what is thermal decomposition

Answer 1

these reactions use the energy in the form of heat for decomposition of the reactant



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Answer 2

$\underline{\underline{\sf{Decomposition \:reaction:-}}}$ The reactions in which a compound is broken into two or more simpler substances are called decomposition reactions.

$\underline{\sf{Example:-}}$

★CaCO3 (s) ${\implies{\sf{}}}$ CaO(s) + CO2 (g)

${\implies{\sf{}}}$ When calcium carbonate is heated, it decomposes to form calcium oxide and carbon dioxide.

★Now,★

$\underline{\underline{\sf{Thermal\:Decomposition \:reaction:-}}}$ When a single compound is decomposed into many small molecules by application of heat, it can be termed as thermal decomposition reaction.

$\underline{\sf{Example:-}}$

★2Pb(NO3)2(s) ${\implies{\sf{}}}$ 2PbO (s) + 4NO2(g) + O2(g)