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23. KCN is insoluble in benzene but in the presence of 18-crown-6 the nucleophilic substitution reactions...

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Chemistry

23. KCN is insoluble in benzene but in the presence of18-crown-6 the nucleophilic substitution reactions take place veryfast using CNas nucleophile- Justify with mechanism.

24. Arylamines and heterocyclic aromatic amines are considerablyless basic than alkylamines — Justify.

25. p-Anisidine is more basic than aniline — Justify withappropriate drawings.

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3.7 Ratings (416 Votes)
23 Benzene is non polar whereas KCN is polar that is ionic innature So in nonpolar solvent like benzene it is remaininsolubleBut in presence of 18crown6 solvent the K ion    See Answer
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