3. A compound 'X' on heating with excess conc.sulphuric acid at 443 K

1.	3. A compound 'X' on heating with excess conc.sulphuric acid at 443 K gives an unsaturatedcompound 'Y'. 'X' also reacts with sodiummetal to evolve a colourless gas 'Z'. Identify'X', 'Y' and Z'. Write the equation of thechemical reaction of formation of 'Y' and alsowrite the role of sulphuric acid in thereaction.
Answer» X→443Kconc.H2SO4Y ( 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)→443Kconc.H2SO4 C2H4(Y) 2C2H5OH→Na2C2H5O-Na++ H2(Z) Role of sulphuric acid: It is used as a dehydrating agent in the above reaction.

3. A compound 'X' on heating with excess conc.sulphuric acid at 443 K gives an unsaturatedcompound 'Y'. 'X' also reacts with sodiummetal to evolve a colourless gas 'Z'. Identify'X', 'Y' and Z'. Write the equation of thechemical reaction of formation of 'Y' and alsowrite the role of sulphuric acid in thereaction.

Answer»

X→443Kconc.H2SO4Y ( 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)→443Kconc.H2SO4 C2H4(Y)

2C2H5OH→Na2C2H5O-Na++ H2(Z)

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