Identify the equation that shows the reaction of ethane with chlorine in the presence of ultraviolet light.

ICSE Class 10 Chemistry PYQ · 2026 Paper · Section A

1(v)1 Mark · 2026 · Section A · 2026 Paper

Identify the equation that shows the reaction of ethane with chlorine in the presence of ultraviolet light.

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C2H6 + Cl2 ⟶ C2H5Cl + HCl

Reason — In the presence of ultraviolet (UV) light, ethane (a saturated hydrocarbon) undergoes a substitution reaction with chlorine. One hydrogen atom of ethane is replaced by a chlorine atom forming chloroethane (C2H5Cl) and hydrogen chloride (HCl) is released.

C2H6 + Cl2 $\xrightarrow{\text{UV light}}$ C2H5Cl + HCl

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