Question

Two carbon compounds A and B have ever the molecular formula C3H8 and C3H6 respectively. Which one of the two is most likely to show addition reaction? Justify your answer . 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

Answer 2

Compound B with molecular formula C3H6 show addition reaction because unsaturated hydrocarbon shows addition reaction. unsaturated hydrocarbon add hydrogen in the presence of catalyst such as Nickel or palladium to form saturated hydrocarbon.
C2H4 +H2 ---------------- C2H6
Ni