Question

A compound x on heating with excess conc sulphuric acid at 443 K given and and unsaturated compound y x also react with sodium metal to evolve a colourless gas Z identify X Y and Z write the equation of the chemical reaction of formation of Y and also write the role of sulfuric acid in the reaction

Answer 1

X →443 Kconc. H2SO4 Y ( unsaturated compound)

Z is hydrogen (Colourless gas) 

X, Y and Z are alcohol, alkene and hydrogen respectively.

Suppose X is ethanol,it gives alkene on reacting with conc. H2SO4

 C2H5OH (X) →443 Kconc. H2SO4  C2H4 (Y)

2C2H5OH →Na2C2H5O-Na+ + H2 (Z)

Role of sulphuric acid: It is used as a dehydrating agent in the above reaction.