Haloalkanes react with KCN to form alkyl cyanides as main product while AgCN forms isocyanides as the chief product. Explain.

Assertion: Haloalkanes react with KCN to form alkyl cyanides as main product while with AgCN form isocyanide as the main product. Reason: KCN and AgCN, both are ionic compounds.

In the following questions, a statement of assertion (A) is following by a statement of reason (R ) A : Haloalkanes react with KCN to give alkyl cyanide as the main product while with AgCN they form isocyanide as the main product. R: In KCN, k form ionic bond due to which one lone pair present on carbon, so carbon act as donor but in AgCN, Ag form covalent bond and carbon has no lone pair so N-atom act as donor.

Account for the following Chloromethane reacts with KCN to form ethanenitrile as the main product and wit AgCN to form methyl isocyanide as the chief product.

CuSO_(4) reacts with KCN to form

Give reasons for the following: (a) Potassium cyanide reacts with R -X to give alkyl cyanide. While silver cyanide forms an isocyanide as a major product. (b) Silver nitrite reacts R-X to give a mixture of nitroalkane and alkyl nitrite. (c) R-OH does not react NaBr but on adding H_(2)SO_(4) . if forms R-Br. (d) Alcohols do not undergo substitutionl in neutrol or alkaline solution.