ORUnsaturated hydrocarbons contain multiple bonds hetween twe caribhus

1.	ORUnsaturated hydrocarbons contain multiple bonds hetween twe caribhusnatoms and these compounds show addition reactions. Ouit of sabursiedand unsaturated carbon compounds, which compounds are murereactive ? Write a test to distinguish ethane from ethene.
Answer» Ehene is an unsaturated hydrocarbon as it contains a double covalent bond between two carbon atoms. Presence of un-saturation or double covalent bond can be distinguished with the help of bromine solution in CCl4. It is an orange colour solution which shows colour change after addition in ethene solution. The orange colour disappears because of formation of the colourless ethylene dibromide (CH2Br─CH2Br). It is an addition reaction of ethene due to presence of double covalent bond in the molecule. CH2= CH2 + Br2→ CH2Br─CH2Br Ethane is a saturated hydrocarbon and cannot show this test. It burns with a clear flame whereas unsaturated hydrocarbons burn with yellow flame and lots of black smoke. if we take addition reaction as basis thenunsaturated compound are more reactive because they combine with hydrogen in presence of catalyst like nickle and PD to form saturated compound. C2H4 + H2 --------ni/PD ------ C2H6

ORUnsaturated hydrocarbons contain multiple bonds hetween twe caribhusnatoms and these compounds show addition reactions. Ouit of sabursiedand unsaturated carbon compounds, which compounds are murereactive ? Write a test to distinguish ethane from ethene.

Answer»

Ehene is an unsaturated hydrocarbon as it contains a double covalent bond between two carbon atoms.

Presence of un-saturation or double covalent bond can be distinguished with the help of bromine solution in CCl4. It is an orange colour solution which shows colour change after addition in ethene solution.

The orange colour disappears because of formation of the colourless ethylene dibromide

(CH2Br─CH2Br). It is an addition reaction of ethene due to presence of double covalent bond in the molecule.

CH2= CH2 + Br2→ CH2Br─CH2Br

Ethane is a saturated hydrocarbon and cannot show this test. It burns with a clear flame whereas unsaturated hydrocarbons burn with yellow flame and lots of black smoke.

if we take addition reaction as basis thenunsaturated compound are more reactive because they combine with hydrogen in presence of catalyst like nickle and PD to form saturated compound.

C2H4 + H2 --------ni/PD ------ C2H6

ORUnsaturated hydrocarbons contain multiple bonds hetween twe caribhusnatoms and these compounds show addition reactions. Ouit of sabursiedand unsaturated carbon compounds, which compounds are murereactive ? Write a test to distinguish ethane from ethene.

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