What type of reaction occurs when bromine water is added to ethene and the orange-brown colour is decolourised?

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Question

What type of reaction occurs when bromine water is added to ethene and the orange-brown colour is decolourised?

Accepted Answer

Addition reaction — Ethene undergoes an addition reaction with bromine because the double bond opens up and bromine atoms add across it, forming 1,2-dibromoethane and decolourising bromine water. Substitution involves replacing an atom; combustion requires oxygen and produces CO2 and H2O; decomposition breaks a compound into simpler substances.

Answer

Substitution reaction

Answer

Addition reaction

Answer

Combustion reaction

Answer

Decomposition reaction

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