Which of the following alkanes can be easily sulphonated?

n-butane

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iso-butane

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n-pentane

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n-hexane

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Solution

The correct option is D n-hexane
Sulphonation - In alkanes, it occurs through the free radical mechanism.

mostly, lower alkanes are less stable because of free radicals. While in higher alkanes get easily occurs.

Among these options, n-hexane has the maximum number of carbon, so it easily gets sulphonate.

Hence, option(d) is the correct answer.

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