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Hydrocarbons — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistryHydrocarbons1 Mark
MCQ
What happens when calcium carbide is treated with water?
  • A
    Ethane is formed.
  • B
    Methane and ethane are formed.
  • C
    Ethyne is formed.
  • D
    Ethene and ethyne are formed.
✓

Answer

  1. Ethyne is formed.

Explanation:

If we mix calcium carbide with water ethyne is released due to endothermic reaction between them. This is the industrial method of producing ethyne.

Ca2+[C≡C]2− + 2H2​O ⟶ CH≡CH​ + Ca(OH)2​

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