$$C_3H_8 + 5O_2 \rightarrow 3CO_2 + 4H_2O + \text{energy}$$

Question 1

Which of the following statements best describes a property of organic compounds compared to inorganic compounds?

Accepted Answer

Organic compounds are typically flammable and undergo combustion.

Question 2

What is the IUPAC name for the following condensed structural formula: $$CH_3$$-$$CH_2$$-$$CH_2$$-$$CH_3$$?

Accepted Answer

Butane

Question 3

Which of the following is a correct statement about cycloalkanes?

Accepted Answer

Cycloalkanes are named by adding the prefix 'cyclo' to the name of the alkane with the same number of carbon atoms.

Question 4

Which of the following best explains why alkanes are insoluble in water?

Accepted Answer

Alkanes are nonpolar and water is polar.

Question 5

What is the balanced chemical equation for the combustion of propane ($$C_3H_8$$)?

Accepted Answer

$$C_3H_8 + 5O_2 ightarrow 3CO_2 + 4H_2O + 	ext{energy}$$

Question 6

Which of the following is a structural isomer of butane ($$C_4H_{10}$$)?

Accepted Answer

2-methylpropane

Question 7

A hydrocarbon with the formula $$C_5H_{10} is $$most likely:

Accepted Answer

A cycloalkane or an alkene

Question 8

Which of the following best describes the difference between saturated and unsaturated hydrocarbons?

Accepted Answer

Saturated hydrocarbons contain only single bonds, while unsaturated hydrocarbons contain double or triple bonds.

Question 9

Which of the following is the correct IUPAC name for a compound with a four-carbon chain and a double bond between carbons 2 and 3?

Accepted Answer

2-butene

Question 10

Which of the following statements about cis-trans isomers is correct?

Accepted Answer

Cis-trans isomers occur in alkenes when each carbon of the double bond has two different groups attached.

Question 11

Which of the following is the product of the hydration reaction of propene ($$CH_2=CH$$-$$CH_3) $$with water ($$H_2O) in $$the presence of acid?

Accepted Answer

$$CH_3-CH(OH$$)-$$CH_3$$

Question 12

Which of the following is a correct statement about aromatic compounds?

Accepted Answer

Aromatic compounds are characterized by a ring structure with delocalized electrons.

Question 13

What is the correct IUPAC name for the following compound: a benzene ring with two chlorine atoms at positions 1 and 4?

Accepted Answer

1,4-dichlorobenzene

Question 14

Which of the following is a correct statement about the physical properties of alkanes?

Accepted Answer

Alkanes with 5-8 carbons are highly volatile liquids at room temperature.

Question 15

Which of the following is the correct product of the hydrogenation of ethene ($$CH_2$$=$$CH_2) $$with $$H_2$$ and a platinum catalyst?

Accepted Answer

$$CH_3$$-$$CH_3$$

Question 16

Which of the following is a correct statement about polymers made from alkene monomers?

Accepted Answer

Polymers are formed by addition reactions of alkene monomers under high temperature and pressure.

Question 17

Which of the following is the correct condensed structural formula for 2,3-dimethylbutane?

Accepted Answer

$$CH_3-CH$$($$CH_3)-CH$$($$CH_3$$)-$$CH_3$$

Question 18

Which of the following is a correct statement about the environmental impact of synthetic polymers?

Accepted Answer

Synthetic polymers are not biodegradable and contribute to pollution.

Question 19

Which of the following is the correct IUPAC name for a six-carbon chain with a triple bond between carbons 2 and 3?

Accepted Answer

2-hexyne

Chapter 12: Introduction to Organic Chemistry – Hydrocarbons (GOB Chemistry Study Notes)

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