Question 1

Which of the following statements best describes a conjugate acid-base pair?

Accepted Answer

Two molecules that differ by exactly one $$H^+$$ ion.

Question 2

A solution has a pH of 3. Which of the following best describes this solution?

Accepted Answer

It is acidic and contains a high concentration of $$H^+$$ ions.

Question 3

During a titration, 25.0 mL of 0.200 M HCl is required to neutralize 50.0 mL of NaOH. What is the concentration of the NaOH solution?

Accepted Answer

$$0.100\ \mathrm{M}$$

Question 4

Which of the following is the correct IUPAC name for a molecule with the following structure: a four-carbon chain with a methyl group attached to the second carbon?

Accepted Answer

2-methylbutane

Question 5

Which functional group is present in the molecule with the condensed formula $$CH_3CH_2OCH_3$$?

Accepted Answer

Ether

Question 6

A hydrocarbon with the formula $$C_5H_{10}$$ contains a double bond. What is the correct name for a five-carbon chain with a double bond starting at carbon 2?

Accepted Answer

2-pentene

Question 7

Which of the following best describes the relationship between $$H^+$$ and $$OH^-$$ ions in pure water at pH 7?

Accepted Answer

The concentrations of $$H^+$$ and $$OH^-$$ are equal.

Question 8

Which of the following is the correct name for a molecule with the structure $$CH_3CH_2CH_2OH$$?

Accepted Answer

1-propanol

Question 9

A student is asked to name a molecule with a six-carbon chain and a triple bond starting at carbon 1. What is the correct IUPAC name?

Accepted Answer

1-hexyne

Question 10

Which of the following best describes an aldehyde functional group?

Accepted Answer

A terminal carbonyl group ($$C=O) $$bonded directly to a hydrogen atom.

Question 11

If a molecule is named 3-ethyl-2-methylhexane, how many carbons are in the principal chain?

Accepted Answer

6

Question 12

Which of the following is the correct condensed structural formula for an isopropyl group?

Accepted Answer

$$CH(CH_3$)_2$$

Question 13

A solution has a pH of 12. Which of the following statements is true?

Accepted Answer

The solution is basic and contains a high concentration of $$OH^-$$ ions.

Question 14

Which of the following is the correct IUPAC name for a molecule with a three-carbon chain and a hydroxyl group on the second carbon?

Accepted Answer

2-propanol

Question 15

A chemist mixes 40.0 mL of 0.150 M acetic acid with 20.0 mL of 0.300 M sodium hydroxide in a titration. Which of the following statements is correct after the reaction is complete?

Accepted Answer

The acid and base are present in stoichiometric amounts and will completely neutralize each other.

Question 16

Which of the following is the correct name for a molecule with the structure $$CH_3CH_2CH_2CHO$$?

Accepted Answer

butanal

Question 17

Which of the following best describes the process of titration?

Accepted Answer

Mixing an acid and a base until they neutralize each other.

Question 18

Which of the following is the correct IUPAC name for a molecule with a five-carbon chain and a terminal triple bond?

Accepted Answer

1-pentyne

Question 19

Which of the following is the correct condensed structural formula for a tert-butyl group?

Accepted Answer

$$C(CH_3$)_3$$

Question 20

A molecule is named 2-methyl-3-hexanol. Which of the following statements is true?

Accepted Answer

The molecule has a six-carbon chain, a methyl group on carbon 2, and a hydroxyl group on carbon 3.

Acids, Bases, and Organic Nomenclature: Study Notes for Introductory Chemistry

Guida di studio - Domande di pratica

Study guide - Flashcard