Draw the structural formula of a compound with two carbon atoms in each of the following cases.

(a) An alkane with a carbon to carbon single bond.

(b) An alcohol containing two carbon atoms.

(c) An unsaturated hydrocarbon with a carbon to carbon triple bond.

Ethane, Ethene, Ethanoic acid, Ethyne, Ethanol.

From the above, name

(a) The compound with -OH as the part of it's structure.

(b) The compound with -COOH as the part of its structure.

(C) Homologue of homologous series with general formula C_nH_2n.

Copy and complete the following table which relates to three homologous series of hydrocarbons:

Fill in the blanks with the correct words from the brackets:

(a) Alkenes are the (i) …………… (analogous/homologous) series of (ii) …………… (saturated/unsaturated) hydrocarbons. They differ from alkanes due to the presence of (iii) …………… (double/single) bonds. Alkenes mainly undergo (iv) …………… (addition/substitution) reactions.

(b) The organic compound which undergoes substitution reaction is (v) …………… (C₂H₂, C₂H₄, C₁₀H₁₈, C₂H₆)

(c) Draw the structural formulae of the two isomers of Butane. Give the correct IUPAC name of each isomer.