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Haloalkanes and Haloarenes
Question
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How do the products differ when ethyl bromide reacts separately with KCN and AgCN?

Answer

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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Some More Questions From Haloalkanes and Haloarenes Chapter

Write structures of different dihalogen derivatives of propane.

Among the isomeric alkanes of molecular formula C5H12, identify the one that on photochemical chlorination yields:

i) A single monochloride.

Among the isomeric alkanes of molecular formula C5H12, identify the one that on photochemical chlorination yields:

i)Three isomeric monochlorides.

Among the isomeric alkanes of molecular formula C5H12, identify the one that on photochemical chlorination yields:
Four isomeric monochlorides.

Draw the structures of major monohalo products in each of the following reactions:

Draw the structures of major monohalo products in each of the following reactions:

Draw the structures of major monohalo products in each of the following reactions:

Draw the structures of major monohalo products in each of the following reactions:

Draw the structures of major monohalo products in each of the following reactions: