Chemistry
Give a chemical test to distinguish between Ethane, ethene and ethyne.
Organic Chemistry
ICSE
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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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Related Questions
Give a chemical test to distinguish between Ethanol and ethanoic acid.
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
(iv) ethanoic acid is known as an aliphatic monocarboxylic acid.
Give the main uses of –
(i) Methane
(ii) Ethane
(iii) Ethene
(iv) Ethyne
(v) Ethanol
(vi) Ethanoic acid.
Explain the terms –
(i) Denaturated alcohol
(i) Glacial acetic acid
(iii) Esterification