Single Choice

Hydrocarbon $$(A)$$ reacts with bromine by substitution to form an alkyl bromide which by Wurtz reaction is converted to gaseous hydrocarbon containing less than four carbon atoms. $$(A)$$ is _______.

A$$CH_{3} - CH_{3}$$
B$$CH \equiv CH$$
C$$CH_{4}$$
Correct Answer
D$$CH_{2} = CH_{2}$$

Solution

Hydrocarbon (A) is methane $$\displaystyle (CH_4)$$. It reacts with bromine by substitution to form methyl bromide $$\displaystyle CH_3-Br$$
$$\displaystyle CH_4+Br_2 \rightarrow CH_3-Br+HBr$$
Methyl bromide by Wurtz reaction is converted to gaseous hydrocarbon containing less than four carbon atoms.
$$\displaystyle 2CH_3Br+2Na \rightarrow CH_3-CH_3 +2NaBr$$
In Wurtz reaction, when same alkyl halide is used, the product alkane has even number of C atoms. The hydrocarbon containing less than four carbon atoms with even number of C atoms is ethane $$\displaystyle (CH_3-CH_3 )$$.

SIMILAR QUESTIONS

Haloalkanes and Haloarenes

Which of the following reactions show nucleophillic substitution of alkyl halide?

Haloalkanes and Haloarenes

Which of the following reactions depict the nucleophilic substitution of $$C_2H_5Br$$?

Haloalkanes and Haloarenes

The main product of which of the following reactions gives tertiary sulphoamide with benzene sulphonyl chloride.

Haloalkanes and Haloarenes

The number of possible organobromine compounds which can be obtained in the allylic bromination of $$1$$-butene with N-bromosuccinimide is ________.

Haloalkanes and Haloarenes

Which of the following compounds will give racemic mixture of nucleophilic substitution by $$OH^-$$ ion? (i) $$CH_3-{\underset{C_2H_5}{\underset{|}{CH}}}-Br$$ (ii) $$CH_3-{\underset{C_2H_5}{\underset{|}{\overset{Br}{\overset{|}{C}}}}}-CH_3$$ (iii) $$CH_3-{\underset{C_2H_5}{\underset{|}{CH}}}-CH_2Br$$

Haloalkanes and Haloarenes

The major product of the following reaction is:

Haloalkanes and Haloarenes

In solvents like $$DMSO$$, acetonitrile, $${F}^{-}$$ ion of dissolved $$NaF$$ is more reactive than in methyl alcohol. Explain.

Haloalkanes and Haloarenes

Which of the following compounds undergoes nucleophilic substitution reaction most easily?

Haloalkanes and Haloarenes

The order of reactivity of various alkyl halide towards the nucleophilic substitution follows the order:

Haloalkanes and Haloarenes

Which of the following haloalkanes is most reactive?

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