Question 1

Which of the following does not describe the number of other atoms a carbon atom can be bonded to?

Accepted Answer

A carbon atom can only form a maximum of 4 covalent bonds with other atoms. Therefore, choice E, which suggests that a carbon atom can be bonded to 5 other atoms, is the option that does not describe the number of other atoms a carbon atom can be bonded to.

Question 2

Which of the following is a saturated molecule?

Accepted Answer

The answer of Which of the following is a saturated...

Question 3

What is the chemical formula of the following structure?

Accepted Answer

The answer of What is the chemical formula of the...

Question 4

What is the chemical formula for the following structure?

Accepted Answer

The answer of What is the chemical formula for the...

Question 5

A single carbon atom is bonded to only one other carbon atom and also two hydrogen atoms. How many bonds are formed between the two carbon atoms?

Accepted Answer

A carbon atom forms four bonds in total. If it is bonded to only one other carbon atom and also two hydrogen atoms, it has one bond left for the carbon-carbon bond.

Question 6

Which of the following does not contain a double bond?

Accepted Answer

The answer of Which of the following does not contain...

Question 7

Which of the above structures might be wrongly named 1, 4-diethylbutane?

Accepted Answer

Structure A has a branching pattern that does not match the name 1,4-diethylbutane. It actually corresponds to 2,4-diethylpentane.

Question 8

Shown below on the left is the structure of 2-methylpentane. What is the name of the structure on the right, labeled (b)? ^(b)

Accepted Answer

The structure on the right is also a pentane with a methyl group attached to the third carbon, which gives it the name 3-methylpentane. It is not isopentylmethane, which would have a branched chain, nor 2-ethylbutane, which would have a different position for the methyl group.

Question 9

A single carbon atom is bonded to only one carbon and only one hydrogen atom. How many bonds are formed between the attached carbon atoms?

Accepted Answer

Carbon atoms form four bonds in total. If a carbon atom is bonded to only one hydrogen, it must use its remaining three bonds to bond with the other carbon atom, resulting in a triple bond.

Question 10

The temperatures in a fractionating tower at an oil refinery are important, but so are the pressures. Where might the pressure in a fractional distillation tower be greatest, at the bottom or at the top? Defend your answer.

Accepted Answer

The pressure is greatest at the bottom because the higher temperature means a greater number of vaporized molecules. As the temperature increases, the liquid in the tower evaporates and rises from the bottom of the tower to the top. As a result, there are more vapor molecules at the bottom of the tower, leading to an increase in pressure at the bottom. Additionally, the weight of the liquid column above the bottom of the tower also contributes to the greater pressure at the bottom.

Question 11

A single carbon atom is bonded to two other carbon atom and also two hydrogen atoms. How many bonds are formed between the each carbon atoms?

Accepted Answer

Each carbon atom is bonded to two other atoms, so it has formed two bonds.

Question 12

Which number set identifies the longest chain of carbons in the following structure?

Accepted Answer

The longest chain of carbons in the structure is numbered 1 to 9 in choice C. Choice A includes carbons 10 and 11 in the chain, which is incorrect. Choice B includes carbon 12, which is not part of the main chain. Choice D includes carbons 10 and 11, but not carbon 3, which is also part of the longest chain.

Question 13

Hydrocarbons with a carbon-carbon double bond are known as ________.

Accepted Answer

Hydrocarbons with a carbon-carbon double bond are known as alkenes. Alkanes have only single bonds, alkynes have triple bonds, and aromatics contain a ring of atoms with alternating double bonds.

Question 14

Which of the above structures is 2, 5-dimethyloctane?

Accepted Answer

2,5-Dimethyloctane would have a total of 10 carbon atoms in its longest chain (8 from the octane plus one methyl group on the second carbon and another on the fifth carbon). None of the options provided could represent this structure without seeing the actual structures, but based on the information given, we can deduce that none of the options correctly represent 2,5-dimethyloctane.

Question 15

Do heavier hydrocarbons tend to produce more or less carbon dioxide upon combustion compared to lighter hydrocarbons? Why?

Accepted Answer

Heavier hydrocarbons have a greater proportion of carbon in their molecular structure, and therefore produce more carbon dioxide upon combustion.

Question 16

A single carbon branch within a hydrocarbon is referred to as a methyl group, while a two carbon branch is referred to as an ethyl group. What then is the formal name for the structure shown below?

Accepted Answer

The longest continuous carbon chain is 8 carbon atoms, so the base name is octane. There are methyl groups at positions 3 and 6, and an ethyl group at position 4. Therefore, the name is 3,6-dimethyl-4-ethyloctane.

Question 17

Which of the following is the hallmark of a saturated hydrocarbon?

Accepted Answer

A saturated hydrocarbon is defined as a hydrocarbon molecule in which all carbon atoms are connected by single bonds, meaning that each carbon is bonded to two other carbons and two hydrogen atoms. Choice B is incorrect because hydrocarbons are nonpolar and don't dissolve in water. Choice C is incorrect because multiple bonds between carbon atoms would make the hydrocarbon unsaturated. Choice D is incorrect because a hydrocarbon solvent would dissolve nonpolar solutes, not dissolve within them.

Question 18

Which of the above structures should be named as a heptane?

Accepted Answer

None of the options provided describe a molecule that can be named as heptane. Heptane is a straight-chain alkane with seven carbon atoms and no branching, which does not match any of the described structures without further context.

Question 19

Which of the above structures should be named as a hexane?

Accepted Answer

The answer of Which of the above structures should be...

Question 20

Which of the above structures is 2, 2, 4-trimethylpentane?

Accepted Answer

The answer of Which of the above structures is 2,...

Quiz 12: Organic Compounds

Which of the following does not describe the number of other atoms a carbon atom can be bonded to?

Which of the following is a saturated molecule?

What is the chemical formula of the following structure?

What is the chemical formula for the following structure?

A single carbon atom is bonded to only one other carbon atom and also two hydrogen atoms. How many bonds are formed between the two carbon atoms?

Which of the following does not contain a double bond?

Which of the above structures might be wrongly named 1, 4-diethylbutane?

Shown below on the left is the structure of 2-methylpentane. What is the name of the structure on the right, labeled (b) ? ^(b)

A single carbon atom is bonded to only one carbon and only one hydrogen atom. How many bonds are formed between the attached carbon atoms?

The temperatures in a fractionating tower at an oil refinery are important, but so are the pressures. Where might the pressure in a fractional distillation tower be greatest, at the bottom or at the top? Defend your answer.

A single carbon atom is bonded to two other carbon atom and also two hydrogen atoms. How many bonds are formed between the each carbon atoms?

Which number set identifies the longest chain of carbons in the following structure?

Hydrocarbons with a carbon-carbon double bond are known as ________.

Which of the above structures is 2, 5-dimethyloctane?

Do heavier hydrocarbons tend to produce more or less carbon dioxide upon combustion compared to lighter hydrocarbons? Why?

A single carbon branch within a hydrocarbon is referred to as a methyl group, while a two carbon branch is referred to as an ethyl group. What then is the formal name for the structure shown below?

Which of the following is the hallmark of a saturated hydrocarbon?

Which of the above structures should be named as a heptane?

Which of the above structures should be named as a hexane?

Which of the above structures is 2, 2, 4-trimethylpentane?

Quiz 12: Organic Compounds

Which of the following does not describe the number of other atoms a carbon atom can be bonded to?

Which of the following is a saturated molecule?

What is the chemical formula of the following structure?

What is the chemical formula for the following structure?

A single carbon atom is bonded to only one other carbon atom and also two hydrogen atoms. How many bonds are formed between the two carbon atoms?

Which of the following does not contain a double bond?

Which of the above structures might be wrongly named 1, 4-diethylbutane?

Shown below on the left is the structure of 2-methylpentane. What is the name of the structure on the right, labeled (b) ? (b)

A single carbon atom is bonded to only one carbon and only one hydrogen atom. How many bonds are formed between the attached carbon atoms?

The temperatures in a fractionating tower at an oil refinery are important, but so are the pressures. Where might the pressure in a fractional distillation tower be greatest, at the bottom or at the top? Defend your answer.

A single carbon atom is bonded to two other carbon atom and also two hydrogen atoms. How many bonds are formed between the each carbon atoms?

Which number set identifies the longest chain of carbons in the following structure?

Hydrocarbons with a carbon-carbon double bond are known as ________.

Which of the above structures is 2, 5-dimethyloctane?

Do heavier hydrocarbons tend to produce more or less carbon dioxide upon combustion compared to lighter hydrocarbons? Why?

A single carbon branch within a hydrocarbon is referred to as a methyl group, while a two carbon branch is referred to as an ethyl group. What then is the formal name for the structure shown below?

Which of the following is the hallmark of a saturated hydrocarbon?

Which of the above structures should be named as a heptane?

Which of the above structures should be named as a hexane?

Which of the above structures is 2, 2, 4-trimethylpentane?

Shown below on the left is the structure of 2-methylpentane. What is the name of the structure on the right, labeled (b) ? ^(b)