1.

Draw the formulae for the first five numbers of each homologous series beginnig with the following compounds: a. `H - COOH` b. `CH_(3) COCH_(3)` c. `H - CH = CH_(2)`

Answer» a. `H.COOH` (Methamoic acid)
ii. `CH_(3) COOH` (Ethanoic acid)
iii. `CH_(3) CH_(2) COOH` (Propanoic acid)
iv. `CH_(3) CH_(2) CH_(2) COOH` (Butanoic acid)
v. `CH_(3) CH_(2) CH_(2) CH_(2) CH_(2) COOH` (Pentanic acid)
b. i. `CH_(3) - CO - CH_(3)` (Propanone)
ii. `CH_(3) - CO - CH_(2) CH_(3)` (Bultan-2-one)
iii. `CH_(3) - CO - CH_(2) CH_(2) CH_(3)` (Pentuan-2-one)
iv. `CH_(3) COC_(4) H_(9)` (Hexan-2-one)
v. `CH_(3) = COC_(5) H_(11)` (Heptan-2-one)
c. i. `CH_(2) = CH_(2)` (Ethene)
ii. `CH_(3) CH_(2) CH = CH_(2)` (Propene)
iii. `CH_(3) CH_(3) CH = CH_(2)` (But-1-ene)
iv. `CH_(3) CH_(2) CH_(2) CH = CH_(2)` (Pent-1-ene)
v. `CH_(3) - CH_(2) - CH_(2) - CH_(2) - CH = CH_(2)`
(Hex-1-ene)]


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