Understanding 2,4-Dimethylpentane Structure

The video tutorial explains the structure of 2,4-dimethylpentane, an alkane with five carbon atoms and single bonds. It describes the addition of methyl groups to the second and fourth carbon atoms, forming the structural formula. The molecular formula is C7H18, and the video highlights the flexibility of bond rotation.

What does the 'ane' suffix in 2,4-Dimethylpentane indicate about its structure?

• It is an aromatic compound.

• It contains triple bonds.

• It is an alkane with single bonds.

• It contains double bonds.

How many carbon atoms are present in the main chain of pentane?

• Three

• Four

• Five

• Six

What is the general formula for a methyl group?

• CH4

• CH3

• C3H7

• C2H5

What is the significance of the 'di' prefix in 2,4-Dimethylpentane?

• It indicates two carbon atoms are present.

• It indicates two methyl groups are present.

• It indicates two double bonds are present.

• It indicates two hydrogen atoms are present.

On which carbon atoms are the methyl groups added in 2,4-Dimethylpentane?

• First and third

• Second and fourth

• Third and fifth

• First and fifth

What is the structural formula of 2,4-Dimethylpentane?

• C7H16

• C7H18

• C6H14

• C5H12

What is the molecular formula of 2,4-Dimethylpentane?

• C8H18

• C7H18

• C6H14

• C5H12

Why can the position of the methyl group be changed without altering the compound?

• Because the bonds can rotate.

• Because the compound is symmetrical.

• Because the compound is aromatic.

• Because the bonds are fixed.

How many hydrogen atoms are present in 2,4-Dimethylpentane?

• 22

• 20

• 18

• 16

What is the role of Dr. B in the video?

• To introduce the concept of isomers.

• To explain the concept of alkenes.

• To demonstrate the structure of 2,4-Dimethylpentane.

• To discuss the properties of aromatic compounds.