Question 1

Which compound below is named nonane ?

Accepted Answer

Nonane is an alkane with the formula C9H20, which corresponds to CH3(CH2)7CH3.

Question 2

Which molecule listed below (none are cyclic) is a saturated hydrocarbon?

Accepted Answer

A saturated hydrocarbon contains only single bonds between carbon atoms and follows the general formula CnH2n+2 for alkanes. None of the given options fit this formula, indicating they are unsaturated hydrocarbons.

Question 3

The molecular formula for hexane is:

Accepted Answer

Hexane is an alkane with the molecular formula C₆H₁₄, following the general formula for alkanes, C_nH_2n+2.

Question 4

What is the correct IUPAC name for the following branching alkane ?

Accepted Answer

The answer of What is the correct IUPAC name for...

Question 5

What attribute of carbon is false ?

Accepted Answer

Carbon can bond with up to four other atoms, not five, due to its valency of four.

Question 6

The name of the compound pictured is:

Accepted Answer

The compound has a chain of five carbon atoms, so it is a pentane. There is a methyl group (CH3) attached to the second carbon atom, so it is 2-methylpentane.

Question 7

What is the correct systematic IUPAC name for the following branching alkane ?

Accepted Answer

The answer of What is the correct systematic IUPAC name...

Question 8

What is the IUPAC name for the following alkane?

Accepted Answer

The answer of What is the IUPAC name for the...

Question 9

What is the general formula for any continuous chain alkane?

Accepted Answer

The general formula for any continuous chain alkane is CnH2n+2, which corresponds to choice A.

Question 10

What is the IUPAC name for the following organic compound?

Accepted Answer

The answer of What is the IUPAC name for the...

Question 11

What is the correct IUPAC name for the following compound?

Accepted Answer

The longest carbon chain is seven carbons, so it is a heptane. The substituents on the chain are a methyl and an ethyl group, which are located on carbons 3 and 4, respectively. Therefore, the correct name is 4-ethyl-3-methylheptane.

Question 12

Consider the following molecules. Which of these molecules are considered saturated ?

Accepted Answer

A saturated molecule is one where all carbon-carbon bonds are single bonds, meaning that each carbon atom has the maximum number of hydrogen atoms attached to it. Option B, CH₃CH₃, contains only single bonds between carbon atoms and is therefore a saturated molecule. The other molecules contain double bonds between carbon atoms, making them unsaturated.

Question 13

What can be stated about the name, 1,2,2-Trimethylpentane?
(Hint:
Draw the molecule from the name given and then try to rename it.)

Accepted Answer

Drawing the molecule based on the name 1,2,2-Trimethylpentane, you will find that the longest continuous chain actually consists of six carbon atoms, not five. Therefore, the correct name for the compound is 3,3-Dimethylhexane, as it correctly describes the longest carbon chain and the positions of the methyl groups.

Question 14

Which line-angle drawing below is named Heptane ?

Accepted Answer

The answer of Which line-angle drawing below is named Heptane...

Question 15

What is the IUPAC name for the straight chain alkane with a formula of CH₃CH₂CH₂CH₂CH₃?

Accepted Answer

The formula given, when decoded from the formatting issues, suggests a chain of five carbon atoms, which corresponds to pentane in IUPAC nomenclature.

Question 16

What can be stated about the name of 3-Methyl-4-Ethylhexane?
(Hint:
Draw the molecule from the name given and then try to rename it.)

Accepted Answer

The correct numbering scheme for the given molecule should have the ethyl group at carbon 3 and the methyl group at carbon 4, resulting in the name 3-Ethyl-4-Methylhexane.

Question 17

Which of the following compounds is considered unsaturated ?
I. CH ₃ CH₂ CH ₂ CH ₃
II. CH₂ =CHCH₃
III.

Accepted Answer

The answer of Which of the following compounds is considered...

Question 18

Which organic compound listed below is octane ?

Accepted Answer

Octane is an alkane with the chemical formula C8H18, which corresponds to CH3(CH2)6CH3.

Question 19

Which of the following line angle drawings is pentane ?

Accepted Answer

The answer of Which of the following line angle drawings...

Question 20

What is the IUPAC name for the following organic compound?

Accepted Answer

The compound has a straight chain of seven carbons, with two methyl groups attached to carbons 2 and 3. Therefore, the correct IUPAC name is 2,3-dimethylheptane.

Quiz 22: Organic Chemistry and Biochemistry

Which compound below is named nonane ?

Which molecule listed below (none are cyclic) is a saturated hydrocarbon?

The molecular formula for hexane is:

What is the correct IUPAC name for the following branching alkane ?

What attribute of carbon is false ?

The name of the compound pictured is:

What is the correct systematic IUPAC name for the following branching alkane ?

What is the IUPAC name for the following alkane?

What is the general formula for any continuous chain alkane?

What is the IUPAC name for the following organic compound?

What is the correct IUPAC name for the following compound?

Consider the following molecules. Which of these molecules are considered saturated ?

What can be stated about the name, 1,2,2-Trimethylpentane? (Hint: Draw the molecule from the name given and then try to rename it.)

Which line-angle drawing below is named Heptane ?

What is the IUPAC name for the straight chain alkane with a formula of CH3CH2CH2CH2CH3?

What can be stated about the name of 3-Methyl-4-Ethylhexane? (Hint: Draw the molecule from the name given and then try to rename it.)

Which of the following compounds is considered unsaturated ? I. CH ₃ CH₂ CH ₂ CH ₃ II. CH₂ =CHCH₃ III.

Which organic compound listed below is octane ?

Which of the following line angle drawings is pentane ?

What is the IUPAC name for the following organic compound?

What is the IUPAC name for the straight chain alkane with a formula of CH₃CH₂CH₂CH₂CH₃?