Question

what is a thermal decomposition reaction explain with two examples​

Answer 1

Answer:

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Explanation:

Thermal decomposition, or thermolysis, is a chemical decomposition caused by heat. The decomposition temperature of a substance is the temperature at which the substance chemically decomposes. The reaction is usually endothermic as heat is required to break chemical bonds in the compound undergoing decomposition. If decomposition is sufficiently exothermic, a positive feedback loop is created producing thermal runaway and possibly an explosion or other chemical reactions.

Examples Edit

Calcium carbonate (limestone or chalk) decomposes into calcium oxide and carbon dioxide when heated. The chemical reaction is as follows:

CaCO3 → CaO + CO2

The reaction is used to make quick lime, which is an industrially important product.

Other example of thermal Decomposition is :- 2Pb(NO3)2 ----> 2PbO + O2 +4NO2

Some oxides, especially of weakly electropositive metals decompose when heated to high enough temperature. A classical example is the decomposition of mercuric oxide to give oxygen and mercury metal. The reaction was used by Joseph Priestley to prepare samples of gaseous oxygen for the first time.

When water is heated to well over 2000 °C, a small percentage of it will decompose into OH, monatomic oxygen, monatomic hydrogen, O2, and H2.[1]

The compound with the highest known decomposition temperature is carbon monoxide at ≈3870 °C (≈7000 °F).

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Answer 2

Answer:

thermal decomposition is a chemical decomposition caused by heat. the decomposition temperature of a substance chemically decomposes ....