Question

a. How many isomers are possible for the compound with the molecular formula C₄H₈? Draw the electron dot structure of branched chain isomer. 

b. How will you prove that C₄H₈ and C₅H₁₀ are homologues?

OR 

A carbon compound ‘A’ having melting point 156K and boiling point 351K, with molecular formula C₂H₆O is soluble in water in all proportions.

a. Identify ‘A’ and draw its electron dot structure. 

b. Give the molecular formulae of any two homologues of ‘A’.

Answer 1

a. Four

b. C₄H₈ and C₅H₁₀ are homologues

as they differ in 

● “- CH₂-” 

● differ in 14u molecular mass 

● Same functional group 

● Same general formula

OR 

a. Ethanol; C₂H₅OH

b. CH₃OH and C₃H₇OH are homologues of ethanol

OR 

CH₄O and C₃H₈O