Q: Which of the following is a correct condensed structural formula for butane?

$$\text{CH}_3\text{CH}_2\text{CH}_2\text{CH}_3$$

Q: What is the product of the complete combustion of methane ($$\text{CH}_4) in $$oxygen?

$$\text{CO}_2$$ and $$\text{H}_2O$

Q: Which of the following is a correct product for the hydrogenation of 1-butene ($$\text{CH}_2=\text{CHCH}_2\text{CH}_3) $$using a platinum catalyst?

$$\text{CH}_3\text{CH}_2\text{CH}_2\text{CH}_3$$

Q: Which of the following is the correct product for the hydration of 2-butene ($$\text{CH}_3\text{CH}=\text{CHCH}_3) $$with water in the presence of a strong acid?

$$\text{CH}_3\text{CH}_2\text{CH}(OH)\text{CH}_3$$

Question 1

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

Accepted Answer

Alkanes are nonpolar and water is polar, so they do not mix due to differences in polarity.

Question 2

What is the molecular formula for hexane, and how many hydrogen atoms does it contain?

Accepted Answer

C6H14; 14 hydrogen atoms

Question 3

Which of the following is a correct condensed structural formula for butane?

Accepted Answer

$$	ext{CH}_3	ext{CH}_2	ext{CH}_2	ext{CH}_3$$

Question 4

A hydrocarbon with the formula $$	ext{C}_4	ext{H}_{10}$$ can exist as two structural isomers. Which statement is true about these isomers?

Accepted Answer

They have the same number of carbon and hydrogen atoms but different arrangements.

Question 5

Which of the following is the correct IUPAC name for the compound with the structure shown below?

$$	ext{CH}_3	ext{CH}_2	ext{CH}(	ext{CH}_3)	ext{CH}_2	ext{CH}_3$$

Accepted Answer

2-methylpentane

Question 6

Which property distinguishes organic compounds from inorganic compounds, according to Table 11.1?

Accepted Answer

Organic compounds are mostly covalent and nonpolar.

Question 7

What is the product of the complete combustion of methane ($$	ext{CH}_4) in $$oxygen?

Accepted Answer

$$	ext{CO}_2$$ and $$	ext{H}_2O$

Question 8

Which of the following best describes the geometry and bond angles of methane ($$	ext{CH}_4$$)?

Accepted Answer

Tetrahedral, 109°

Question 9

A compound is named 3-bromo-1-chlorobutane. Which statement about its structure is correct?

Accepted Answer

The bromine atom is attached to carbon 3 and chlorine to carbon 1.

Question 10

Which of the following is the correct line-angle formula for cyclopentane?

Accepted Answer

A pentagon shape

Question 11

Which of the following is the correct IUPAC name for the compound with a seven-carbon chain, methyl groups on carbons 2 and 3, and a chlorine atom on carbon 1?

Accepted Answer

1-chloro-2,3-dimethylheptane

Question 12

Which of the following statements about alkenes is correct?

Accepted Answer

Alkenes contain at least one carbon–carbon double bond.

Question 13

What is the correct IUPAC name for the compound with a five-carbon chain and a double bond starting at carbon 2?

Accepted Answer

2-pentene

Question 14

Which of the following best describes the bond angles in ethyne ($$	ext{C}_2	ext{H}_2$$)?

Accepted Answer

180°

Question 15

Which of the following is a correct product for the hydrogenation of 1-butene ($$	ext{CH}_2=	ext{CHCH}_2	ext{CH}_3) $$using a platinum catalyst?

Accepted Answer

$$	ext{CH}_3	ext{CH}_2	ext{CH}_2	ext{CH}_3$$

Question 16

Which of the following is a correct statement about cis–trans isomers in alkenes?

Accepted Answer

Cis–trans isomers occur because the double bond is rigid and does not rotate.

Question 17

Which of the following is the correct product for the hydration of 2-butene ($$	ext{CH}_3	ext{CH}=	ext{CHCH}_3) $$with water in the presence of a strong acid?

Accepted Answer

$$	ext{CH}_3	ext{CH}_2	ext{CH}(OH)	ext{CH}_3$$

Question 18

Which of the following is the correct IUPAC name for a cycloalkane with an ethyl group attached?

Accepted Answer

ethylcyclohexane

Chapter 11: Introduction to Organic Chemistry – Alkanes, Alkenes, and Alkynes

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