An aliphatic hydrocarbon Aon treatment with sulphuric acid in the presence of HgSO4 yields a liquid B with molecular formula C2H40. B on oxidation with acidified potassium dichromate yields C which gives effervescence with sodium bicarbonate. C when treated with SOCl2gives D. When D reacts with ethanol it gives a sweet smelling liquid E. E is also formed when C reacts with ethanol in the presence of conc. H2S04.
(i) Identify A, B, C, D and E.
(ii) Draw the structure of the isomer of compound B.
(iii) Write the balanced equation for the conversion of A to B.
A---> Acetylene
B----> Acetaldehyde
C---> Acetic Acid
D--> Acetyl chloride
E--> Ethyl acetate
ii) Isomers of acetaldehyde
CH2=CHOH
iii) 
