Q28 of 312 Page 240

By how many carbon atoms and hydrogen atoms do any two adjacent homologues differ?

Any two adjacent homologues differ by 1 carbon atom and 2 hydrogen atoms in their molecular formulae.

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28 (a) Give the molecular formula of one homologue of each of the following:

(i) C3H6


(ii) C2H6


(iii) C2H2

 28 What is the difference in the molecular mass of any two adjacent homologues? 29 Write the formula of the functional group present in carboxylic acids. 29 Name the functional group present in CH3 – C ≡ CH.