Question

A dihalogen derivative (x) with three carbon atoms reacts with alcoholic koh to give hydrocarbon (y) which gives a white precipitate with ammonical agno3agno3. With aqueous koh (x) gives a ketone. The compound (x) is :

Answer 1

Answer:

A dihalogen dervative (A) of a hydrocarbon having two carbon atoms reacts with alcoholic potash and forms another hydrocarbon which gives a red precipitate with ammoniacal cuprous chloride. Compound A gives an aldehyde when treated with aqueous KOH. Write down the name and formula for the organic compound.

Answer 2

The compound ( x ) is 2,2-dichloropropane [ CH$_3$C(Cl$_2$)CH$_3$ ] .

• White precipitate with ammonical AgNO$_3$  is a characteristic reaction of alk-1-yne . That means y is 1 - propyne .
• Reaction with aqueous KOH,  gives a ketone that means the two halides are attached to the same carbon that is carbon number 2 .
• The above reason indicates that the  compound ( x ) is 2,2-dichloropropane [ CH$_3$C(Cl$_2$)CH$_3$ ] .