Question

3 consequitive examples of 2 homologos serier

Answer 1

The homologous series of straight-chained alkanes begins methane (CH4), ethane (C2H6), propane (C3H8), butane (C4H10), and pentane (C5H12). In that series, successive members differ in mass by an extra methylene bridge (-CH2- unit) inserted in the chain.

Answer 2

Straight-chain alkanesCnH2n + 2 (n ≥ 1)H3C− ... −CH3Straight-chain 1-alkynesCnH2n − 2 (n ≥ 2)HC≡C− ... −CH3polyacetylenesC2nH2n + 2(n ≥ 2)H3C− ... −CH3Straight-chain primary alcoholsCnH2n +1OH (n ≥ 1)H3C− ... −OHStraight-chain primary monocarboxylic acidsCnH2n +1COOH (n ≥ 0)H3C− ... −COOH