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Haloalkanes and Haloarenes

Short Answer Type

141. Haloalkanes are insoluble in water. Give reason.

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Long Answer Type

142. How do the boiling points of R—Cl, R—Br and R—I show variations? Justify your answer.

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Short Answer Type

143. Haloalkanes react with KCN to form alkyl cyanides as main product while AgCN form isocyanides as the chief product. Give reason.

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144.
What are nucleophiles? Give some examples of nucleophiles.

Nucleophile is molecule or ion which have ability to donate it electron. A nucleophile has affection for a positively charged centre. The nucleophile is contained in nucleophilic reagent (nucleo = + ve centre, philic = liking, love affection).

Examples of nucleophiles and nucleophilic reagents.