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Straight Chain Hydrocarbons

Which test ca...

Question

Which test can be used to distinguish between acetylene and ethylene gasses?

A

Reaction with

B r_{2}

in

C C l_{4}

solvent

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B

Cone.

H_{2} S O_{4}

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C

Ammoniacal cuprous chloride solution

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D

Hydrogen gas in presence of Pt

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Solution

The correct option is C Ammoniacal cuprous chloride solution
The substitution reactions which ethyne undergoes to form compounds with metals do not occur with the ethylene. These reactions can be used as tests to distinguish between acetylene and ethylene. When acetylene is passed through an ammonical solution of cuprous chloride at room temperature cuprous acetylide(red) is formed.

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