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Chemistry

(i) What type of reaction takes place between ethane and chlorine to form monochloroethane?

(ii) The reaction between ethene and chlorine forms only one product. Name the type of this reaction.

(iii)

  1. Draw the structural formula of ethene.
  2. What is the feature of the ethene structure which allows ethene to react with chlorine in the way it does?

Organic Chemistry

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Answer

(i) Substitution reaction

C2H6 ethane+Cl2diffused sunlightΔC2H5Clmonochloroethane+HCl\underset{\text{ ethane} }{\text{C}2\text{H}6} + \text{Cl}2 \underset{\Delta}{\xrightarrow{\text{diffused sunlight}}} \underset{\text{monochloroethane}}{\text{C}2\text{H}_5\text{Cl}} + \text{HCl}

(ii) Halogenation Reaction

C2H4+Cl2C2H4Cl2\text{C}2\text{H}4 + \text{Cl}2 \longrightarrow \text{C}2\text{H}4\text{Cl}2

(iii) Structural formula of Ethene:

Structural formula of Ethene. Model Paper 1, Concise Chemistry Solutions ICSE Class 10
  1. The carbon-carbon double bond allows ethene to participate in an addition reaction with chlorine.

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