Question

Two organic compounds A and B have the same molecular formula C6H12. Write the names and structural formulae :
(a) if A is a cyclic compound
(b) if B is an open chain compound
(c) Which compound contains single bonds as well as a double bond ?
(d) Which compound contains only single bonds ?

Lakhmir Singh Chemistry Class 10

Answer 1

a)  cyclohexane
b)  hexene
c) hexene
d) cyclohexane

Answer 2

Names and structural formulae of compound with molecular formula $C_6H_{12}$.

(a) Name and structure of the cyclic compound with formula $C_6H_{12}$

• The structure which gives a ring-like appearance is called a cyclic structure.
• The name of the cyclic compound with the given formula is cyclohexane.
• In it, the ring is made up of 6 atoms of carbons and with each carbon atoms, hydrogen atoms are bonded.
• The structure of cyclohexane is given in the attachment.

(b) Name and structure of the open chain compound with formula $C_6H_{12}$

• The name of the open chain compound with the given formula is hexane.

• In open chain structure, 6 atoms of carbons are arranged in linear form and with carbon atoms, hydrogen atoms are bonded.
• The structure of hexane is given in the attachment.

(c)  Cyclohexane is composed of both single as well as a double bond. Kindly refer to the structure given in the attachment.

(d) Hexane is composed of only a single bond as shown in the structure given in the attachment.

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