Isomers are the organic compounds having same molecular formula, but different arrangements of carbon atoms or simply different structures. For example, butane can exist in two isomeric forms such as n-butane and iso-butane.

Complete the following table: Straight chain of Carbon compounds Structural formula Molecular formula Name C CH 4 Methane C - C _____ _____ Ethane C - C - C _____ C 3 H 8 _____ C - C - C - C _____ _____

Straight chain of Carbon compounds Structural formula Molecular formula Name C CH 4 Methane C - C C 2 H 6 Ethane C - C - C C 3 H 8 Propane C - C - C - C C 4 H 10 Butane Methane, ethane, propane and butane are saturated hydrocarbons containing 1 , 2 , 3 and 4 carbon atoms respectively. Saturated hydrocarbons are the simplest of the hydrocarbon species and are composed entirely of single bonds. All these hydrocarbons belong to the alkane homologous series. The general formula for alkanes is C n H 2 n + 2 . So, the chemical formula for ethane is C 2 H 6 , for propane it is C 3 H 8 and the formula for butane is C 4 H 10 .

EASY

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The structure of cyclohexene is:

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Important Questions on Carbon Compounds

MEDIUM

Science>Chemistry>Carbon Compounds>Straight, Branched and Ring Chains of Carbon Atoms

Draw the structure of the compound of carbon given below.

Benzene.

EASY

Science>Chemistry>Carbon Compounds>Straight, Branched and Ring Chains of Carbon Atoms

What are isomers?

HARD

Science>Chemistry>Carbon Compounds>Straight, Branched and Ring Chains of Carbon Atoms

Complete the following table:

Straight chain of Carbon compounds	Structural formula	Molecular formula	Name
$C$		${CH}_{4}$	Methane
$C - C$	_____	_____	Ethane
$C - C - C$	_____	$C_{3} H_{8}$	_____
$C - C - C - C$		_____	_____

EASY

Science>Chemistry>Carbon Compounds>Straight, Branched and Ring Chains of Carbon Atoms

Write the name and structure of a saturated compound in which the carbon atoms are arranged in a ring. Give the number of single bonds present in this compound.

EASY

Science>Chemistry>Carbon Compounds>Straight, Branched and Ring Chains of Carbon Atoms

Which of the following are correct structural isomers of butane?
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