Question

Iodoform gives a precipitate with $AgN{O}_3$ on heating but chloroform does not because.

• A. C-I bond in iodoform is weak and C-Cl bond in chloroform is strong
• B. Chloroform is covalent
• C. Iodoform is ionic
• D. None of the above

Answer 1

The correct option is A C-I bond in iodoform is weak and C-Cl bond in chloroform is strong

Iodoform consists of a weak $C-I$ bond and thus easily hydrolyses to give enough $I^{ˉ}$ ion to react with $AgN{O}_3$.
Chloroform has a stronger bond with the halogen $Cl$ and thus does not easily hydrolyse to provide for ${Cl}^{ˉ}$ ions.