Question

Two carbon compounds 'A' and 'B' have the molecular formula C3H8 and C3H6 respectively which one of the two is most likely to show addition reaction?? Justify the answer please....!Explain with the help of a chemical equation. how an addition reaction is useful in vegetable ghee industry??

Answer 1

compound A is C3H8. its propane saturated hydrocarbon.it does not undergo addition reaction.
compound B is C3H6.Its Propene unsaturated hydrocarbon. it undergoes addition reaction.
Addition reaction involves addition of H2 to unsaturated hydrocarbon in presence of Nickel catalyst when they are heated. it gives saturated hydrocarbon.
heat
C2H4 +H2 --------->. C2H6
Ni catalyst
Hydrogenation of oil: Vegetable oil like ground nut oil which is liquid at room temperature undergoes addition reaction and gives vegetable ghee or dalda.
vegetable oil contains unsaturated fatty acids which are good for our health.
heat
veg.oil + H2 ---------> Veg.Ghee
Ni

Answer 2

The compound 'A' with formula c3h8(propane) is a saturated hydrocarbon and corresponds to general formula cnh2n+2. The compound 'B' with formula c3h6(propene) is an unsaturated hydrocarbon and corresponds to general formula cnh2n. It has a double bond (c=c) and is therefore, unsaturated.

The compound 'B' will take part in the addition reactions. As a result, double bond will change to single bond .

The addition reaction is quite useful in the hydrogenation of oils i.e., to convert edible oils like ground nut oil and cotton seed oil which are unsaturated in nature into solid fats which are of saturated nature.