Heating of alkanes with fuming sulphuric acid or oleum at high temperature, which forms sulphonic acid, is called:

nitration

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halogenation

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sulphonation

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oxidation

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Solution

The correct option is C sulphonation
Heating of alkanes with fuming sulphuric acid or oleum at high temperature, which form sulphonic acid, is called Sulphonation.
$H_{2} S_{2} O_{7} (O l e u m) ⟶ H_{2} S O_{4} + S O_{3}$
$R - H + S O_{3} ⟶ R - S O_{2} O H$

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Similar questions

H_{2} S O_{4}

S O_{3}

Compound A on sulphonation with oleum forms benzene sulphonic acid, which on heating with NaOH and acidification yields phenol. What is Compound A?

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