Question

Define a homologous series of carbon compounds.

Why is the melting and boiling points of C₄H₈ higher than that of C₃H₆ or C₂H₄ ?

Why do we NOT see any gradation in chemical properties of a homologous series compounds ?

Write the name and structures of (i) aldehyde and (ii) ketone with molecular form C₃H₆O.

A saturated organic compound 'A' with two carbon atoms belongs to the homologous series of alcohols. On oxidation, it forms an organic acid 'B' with molecular mass 60 u. On heating 'A' with excess concentrated sulphuric acid at 443 K, an unsaturated hydrocarbon 'C' is formed. (i) Name A, B and C. (ii) Calculate molecular mass of C. (iii) What happens when a pinch of sodium carbonate is added to compound B ? Write chemical equation for the reaction. (iv) Draw electron dot structure of compound B.