Question 1

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

Accepted Answer

Alkanes are nonpolar molecules and water is polar, so they do not mix due to the 'like dissolves like' principle.

Question 2

Which of the following is the correct IUPAC name for the compound with the condensed formula CH$$_3CH$_2CH$_2CH$_2CH$_3$$?

Accepted Answer

Pentane

Question 3

A compound has the formula C$$_4H$_8. $$Which of the following best describes its possible structure?

Accepted Answer

It could be an alkene or a cycloalkane.

Question 4

Which of the following reactions is used to convert an alkene to an alkane?

Accepted Answer

Hydrogenation, using H$$_2$$ and a metal catalyst

Question 5

Which of the following compounds would have the highest boiling point?

Accepted Answer

Ethanol (CH$$_3CH$_2OH)$$

Question 6

Which of the following is a structural isomer of 2-methylpropane?

Accepted Answer

n-butane

Question 7

Which of the following best describes the result of the dehydration of a secondary alcohol?

Accepted Answer

An alkene is formed, often with the more substituted double bond as the major product.

Question 8

Which reagent is commonly used to oxidize a primary alcohol to an aldehyde?

Accepted Answer

PCC (Pyridinium chlorochromate)

Question 9

Which of the following compounds will give a positive Tollens’ test?

Accepted Answer

Butanal

Question 10

What is the product when benzene reacts with methyl chloride (CH$$_3Cl) in $$the presence of AlCl$$_3$$ catalyst?

Accepted Answer

Toluene (methylbenzene)

Question 11

Which of the following best describes the difference between an aldehyde and a ketone?

Accepted Answer

Aldehydes have a carbonyl group at the end of the carbon chain, while ketones have it within the chain.

Question 12

Which of the following is the correct IUPAC name for the compound with the structure: CH$$_3CH$_2CH$_2OH$$?

Accepted Answer

1-propanol

Question 13

Which of the following statements about ethers is correct?

Accepted Answer

Ethers have lower boiling points than alcohols of similar molecular weight due to lack of hydrogen bonding.

Question 14

Which of the following is the major product when 2-butanol is dehydrated under acidic conditions?

Accepted Answer

2-butene

Question 15

Which of the following best describes the result of the reduction of an aldehyde?

Accepted Answer

A primary alcohol is formed.

Question 16

Which of the following compounds is classified as a thiol?

Accepted Answer

CH$$_3CH$_2SH$$

Question 17

Which of the following is the correct product when an aldehyde reacts with an alcohol under acidic conditions?

Accepted Answer

A hemiacetal is formed.

Question 18

Which of the following best explains why phenol has a higher boiling point than benzene?

Accepted Answer

Phenol can form hydrogen bonds, while benzene cannot.

Question 19

Which of the following is the correct IUPAC name for the compound with the structure: CH$$_3$$COCH$$_2CH$_3$$?

Accepted Answer

2-butanone

CHM132 Exam 1 Study Guide: Hydrocarbons, Alcohols, Aldehydes & Ketones

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