Question

a compound 'x' on heating with excess conc. sulphuric acid at 443k gives an unsaturated compound 'y'.'x' also react with sodium metal to evolve a colourless gas 'z'. identify 'x','y','z' wrute the equation of the chamical reaction of formation of 'y' and also write the role of sulphuric acid in the reaction

Answer 1

X-Ethanol
Y-Ethene
Z-Hydrogen gas
C2H5OH---Conc.H2SO4--->C2H4+H2O
Sulphuric acid acts as a dehydrating agent.
Hope it helps.

Answer 2

compound 'x'-Ethanol

Y- ethene C2H4

Z- H2

sulphuric acid-dehydrating agent

   

C2H5OH    ⇒ C2H4+ H20

add hot .conc.H2SO4 upon the arrow mark.

Hope this answer helps you the best!