Q8. What will be the product for the following reactions?
CH₃-X --(KCN)-- A
CH₃-X --(AgNO₂)-- B

Q: What is the correct answer for CUET UG Chemistry Q8?

The correct answer is a. This question deals with the ambident nucleophiles cyanide (CN⁻) and nitrite (NO₂⁻).1. **Reaction with KCN:** KCN is an ionic compound, so it readily provides the cyanide ion (CN⁻) in solution. The cyanide ion is an ambident nucleophile, meaning it can attack through either the carbon atom or the nitrogen atom. However, in reactions with alkyl halides, the carbon-carbon bond is generally stronger

Q: Q8. What will be the product for the following reactions? CH₃-X --(KCN)--> A CH₃-X --(AgNO₂)--> B

The correct answer is a. This question deals with the ambident nucleophiles cyanide (CN⁻) and nitrite (NO₂⁻).1. **Reaction with KCN:** KCN is an ionic compound, so it readily provides the cyanide ion (CN⁻) in solution. The cyanide ion is an ambident nucleophile, meaning it can attack through either the carbon atom or the nitrogen atom. However, in reactions with alkyl halides, the carbon-carbon bond is generally stronger

Q: What are the options for this CUET UG Chemistry question?

A. A: CH₃CN, B: CH₃NO₂ · B. A: CH₃NC, B: CH₃-O-N=O · C. A: CH₃CN, B: CH₃-O-N=O · D. A: CH₃NC, B: CH₃-NO₂

Question

Q8. What will be the product for the following reactions?
CH₃-X --(KCN)--> A
CH₃-X --(AgNO₂)--> B

FirstInTest · Accepted Answer

This question deals with the ambident nucleophiles cyanide (CN⁻) and nitrite (NO₂⁻).1.  **Reaction with KCN:** KCN is an ionic compound, so it readily provides the cyanide ion (CN⁻) in solution. The cyanide ion is an ambident nucleophile, meaning it can attack through either the carbon atom or the nitrogen atom. However, in reactions with alkyl halides, the carbon-carbon bond is generally stronger and more stable. Therefore, KCN typically attacks through the carbon atom, forming alkyl cyanides (nitriles) as the major product.    CH₃-X + KCN → CH₃CN (methyl cyanide/acetonitrile) + KX    So, A = CH₃CN.2.  **Reaction with AgNO₂:** AgNO₂ is a covalent compound. The silver atom is bonded to the oxygen atom. In reactions with alkyl halides, the nitrogen atom of the nitrite group has a lone pair and is sterically less hindered than oxygen. Attack through the nitrogen atom forms nitroalkanes (R-NO₂) as the major product. Alkyl nitrites (R-O-N=O) are formed as minor products.    CH₃-X + AgNO₂ → CH₃NO₂ (nitromethane) + AgX    So, B = CH₃NO₂.Therefore, the products are A: CH₃CN and B: CH₃NO₂. This matches option (a).

Answer

A: CH₃CN, B: CH₃NO₂

Answer

A: CH₃NC, B: CH₃-O-N=O

Answer

A: CH₃CN, B: CH₃-O-N=O

Answer

A: CH₃NC, B: CH₃-NO₂

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