Question

When a haloalkane reacts with AgNO₂ then nitroalkane is formed but the reaction of KNO₂ with a haloalkane gives alkyl nitrite. Give reasons and write the two reactions.

Solution

In AgNO₂ the nucleophile is NO₂^– group while in potassium nitrite (KNO₂) the nucleophile is O^–—N = O group. Therefore, these two reagents form two types of compounds with haloalkanes.
(i)

stack straight R space minus space straight X with H a l o a l k a n e below plus space stack A g to the power of plus N O subscript 2 to the power of minus with S i l v e r space n i t r i t e below space space rightwards arrow space space space stack K N O subscript 2 with N i t r o space a l k a n e below space plus space stack A g X with S i l v e r space h a l i d e below

(ii)

stack space straight R minus straight X with space space space space Haloalkane below space plus space stack straight K minus straight O minus straight N with Potassium space nitrite below equals straight O space space rightwards arrow space space stack straight R minus straight O minus straight N equals straight O with Alkyl space nitrite below space plus space KX with Potassium space halide below

Some More Questions From Haloalkanes and Haloarenes Chapter

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Haloalkanes And Haloarenes

When a haloalkane reacts with AgNO₂ then nitroalkane is formed but the reaction of KNO₂ with a haloalkane gives alkyl nitrite. Give reasons and write the two reactions.

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:

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NCERT Sample Papers

Entrance Exams Preparation

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Haloalkanes And Haloarenes

When a haloalkane reacts with AgNO2 then nitroalkane is formed but the reaction of KNO2 with a haloalkane gives alkyl nitrite. Give reasons and write the two reactions.

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:

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

When a haloalkane reacts with AgNO₂ then nitroalkane is formed but the reaction of KNO₂ with a haloalkane gives alkyl nitrite. Give reasons and write the two reactions.

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.