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Byju's Answer

Standard XII

Chemistry

Cross Aldol Condensation

Arrange the r...

Question

Arrange the reactions given below in proper sequence for the conversion of ethane to methane.
(a) Treatment with sodium hydroxide (b) Treatment with aqueous $K O H$ (c) Treatment with $N a O H + C a O$ (d) Halogenation (e) Reaction with acidified $K_{2} C r_{2} O_{7}$

e a d b c

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d b e a c

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e c b a d

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d e a b c

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Solution

The correct option is C d b e a c
Halogenation of ethane gives ethyl halide.
Treatment with aqueous $K O H$ produces ethanol.
Reaction with acidified potassium dichromate produces ethanoic acid.
Now reaction with $N a O H$ produces sodium salt of carboxylic acid, $C H_{3} C O O N a$ .
Finally, reaction with $N a O H + C a O$ , does decarboxylation which removes a carbon atom from the chain and forms alkane with one carbon atom less, hence methane is formed.

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Arrange the reactions given below in proper sequence for the conversion of ethane to methane.(a) Treatment with sodium hydroxide (b) Treatment with aqueous KOH (c) Treatment with NaOH+CaO (d) Halogenation (e) Reaction with acidified K2Cr2O7

Arrange the reactions given below in proper sequence for the conversion of ethane to methane.
(a) Treatment with sodium hydroxide (b) Treatment with aqueous $K O H$ (c) Treatment with $N a O H + C a O$ (d) Halogenation (e) Reaction with acidified $K_{2} C r_{2} O_{7}$