Chemistry
Give a chemical test to distinguish between Ethane, ethene and ethyne.
Organic Chemistry
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Answer
Chemical tests to distinguish between Ethane, Ethene and Ethyne:
| Sl. No. | Test | Ethane | Ethene | Ethyne |
|---|---|---|---|---|
| 1. | On adding a few drops of bromine solution in carbon tetrachloride (CCl4) to the hydrocarbon | No change is observed. | The reddish brown colour of bromine solution get decolourised. | The reddish brown colour of bromine solution get decolourised. |
| 2. | On adding a few drops of ammoniacal cuprous chloride (CuCl2) to the hydrocarbon | No change is observed. | No change is observed. | Red precipitate of copper acetylide is formed. |
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Give reasons for:
(i) alkanes are said to be saturated organic compounds
(ii) alkenes are known as olefins
(iii) alkenes are more reactive than alkanes
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(ii) Ethane
(iii) Ethene
(iv) Ethyne
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(vi) Ethanoic acid.
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(i) Glacial acetic acid
(iii) Esterification