Question

A compound X on heating with excess conc. Sulphuric acid at 443k gives an unsaturated compound Y . X also reaxts with sodium metal to evolve a colour less gas Z . Identify X ;Y andZ .write a chemical equation of formation of Yand also write the role of sulphuric acid in ts reaction

Answer 1

it is the question which has came in exam
element X is ethanol
element Y ethene
and Z gas evolve is hydrogen

Answer 2

x is ethanol
y is ethene
z is carbon dioxide

when ethanol is heated at 443k with excess conc. of sulpheric acid it gives ethene and

chemical eq. is in pic.
the role odf sulphuric acid in its reaction is dehydrating agent (or removal of water )