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Haloalkanes and Haloarenes

Short Answer Type

391. How will you distinguish between (Give one chemical test):

C₆H₅Cl and C₆H₅CH₂Cl?

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392.

Explain the following:
Chloroform is chlorine compound but it fails to react with silver nitrate solution.

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393.

Explain the following:

Methyl chloride is hydrolysed more readily than chlorobenzene.

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394. How do the products differ when ethyl bromide reacts separately with aq. KOH and alc. KOH?

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395. How do the products differ when ethyl bromide reacts separately with KNO₂ and AgNO₂ ?

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396. How do the products differ when ethyl bromide reacts separately with KCN and AgCN?

KCN is predominantly , ionic and therefore , both C and N atoms is available for the electron donation but the reaction occurs through carbon as C-C bonds are stronger than C- N bond, therefore the attack occurs through the carbon atom of the cyanide group forming alkyl cyanides as the main product.

C₂H₅Br +KCN --> C₂H₅CN +KBr

On the other hand ,AgCN is predominantly covalent in nature and nitrogen is free to donate electron pair forming isocyanides as the main product.

C₂H₅Br + AgCN ---> C₂H₅NC

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