Question

The genral formula of a homologous series of carbon compound is cnh2n write the molecular formula of the third and fourth member of the series
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Answer 1

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(a) Alkynes, C n H 2n−2

First member: Ethyne

(b) Alkene

Second member : C 2 H 4

Fourth member : C 4 H 8

(c) Alkanes

Third member : C 3 H 8

Fifth member : C 5 H 12

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