Isomerism

Define Isomerism.

Propane has no structural isomers

• True

• False

Which formulas represent butane or its isomer?

(1) CH3(CH2)2CH3

(2) CH3CH(CH3)CH3

(3) (CH3)3CH

• 1 and 2 only

• 1 and 3 only

• 2 and 3 only

• 1 , 2 and 3

Which structural formula represents an isomer?

• 
• 
• 
• 

A structural isomer of pentane is?

• 2-methyl butane

• 2,2-dimethyl octane

• 1-methyl propane

• 1-methyl pentane

Which of the following is true about structural isomers?

• Have the same molecular formula
• Have different physical and chemical properties.
• Have the same number of elements
• all of the above

Given the structural formulas below, which 2 formulas represent compounds that are isomers of each other?

• A and B
• A and C
• B and D
• C and D

Which structural formula represents a molecule that is not an isomer of pentane?

• 
• 
• 
• 

Which of the following are isomers of butene ?

• I, III

• II, IV

• I,II, III

• I, II, IV

The molecular formula C₅H₁₂ contains how many isomeric alkanes?

• 1

• 2

• 3

• 4