Given below are two statements :
Statement-I : Benzenediazonium salt is prepared by the reaction of aniline with nitrous acid at . It decomposes easily in the dry state.
Statement-II : Insertion of iodine into the benzene ring is difficult and hence iodobenzene is prepared through the reaction of benzenediazonium salt with KI.
In the light of the above statements, choose the most appropriate answer from the options given below:
- AStatement I is correct but Statement II is incorrect
- BStatement I is incorrect but Statement II is correct
- CBoth Statement I and Statement II are correct
- DBoth Statement I and Statement II are incorrect
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Correct answer: C
Benzene diazonium chloride is prepared by the reaction of aniline with nitrous acid at 273-278 K .
Nitrous acid is produced in the reaction mixture by reaction of $\mathrm{NaNO}_2$ with HCl.
$$\mathrm{C}_6 \mathrm{H}_5 \mathrm{NH}_2+\mathrm{NaNO}_2+2 \mathrm{HCl} \xrightarrow{273-278 \mathrm{~K}} \mathrm{C}_6 \mathrm{H}_5 \stackrel{+}{N}_2^{+} \stackrel{-}{\mathrm{Cl}}+\mathrm{NaCl}+2 \mathrm{H}_2 \mathrm{O}$$
Benzene diazonium chloride decomposes easily in the dry state
lodobenzene is prepared by shaking benzene diazonium salt with KI because direct insertion of iodine into benzene ring is difficult
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