$$\mathrm{CH_3COOH}$$ ($$K_a = 1.8 \times 10$$^{-5}$$)

Question 1

Which of the following properties is NOT characteristic of a base?

Accepted Answer

Turns litmus paper red

Question 2

A Brønsted-Lowry base is defined as a substance which:

Accepted Answer

Accepts a proton ($$\mathrm{H^+}) in a $$chemical reaction

Question 3

What is the conjugate acid of the Brønsted-Lowry base $$\mathrm{HS^-}$$?

Accepted Answer

$$\mathrm{H_2S}$$

Question 4

Which of the following is the weakest acid?

Accepted Answer

$$\mathrm{CH_3COOH}$$ ($$K_a = 1.8 	imes 10$$^{-5}$$)

Question 5

When a reaction is at equilibrium, which statement is TRUE?

Accepted Answer

The rate of the forward reaction is equal to the rate of the reverse reaction

Question 6

In an acidic solution, the pH is:

Accepted Answer

Less than 7

Question 7

What is the pH of a solution that has a $$[\mathrm{H^+}] = 1.2 	imes 10$$^{-7}$$ M?

Accepted Answer

6.92

Question 8

Which of the following is NOT a characteristic element of proteins?

Accepted Answer

P

Question 9

Citrus is an incomplete protein because it lacks one or more:

Accepted Answer

Essential amino acids

Question 10

How many amino acids are essential in humans?

Accepted Answer

9

Question 11

What is the primary function of enzymes?

Accepted Answer

Biochemical catalyst

Question 12

Which of the following nitrogenous bases is only found in RNA?

Accepted Answer

Uracil

Question 13

The reaction of a 5-carbon sugar with a nitrogenous base to form a nucleoside is an example of:

Accepted Answer

Condensation

Question 14

A nucleotide contains:

Accepted Answer

A phosphate, a pentose, and a nitrogenous base

Question 15

The sugar that is part of the backbone of DNA contains how many carbon atoms?

Accepted Answer

5

Question 16

The conversion of proteins into amino acids, polysaccharides into monosaccharides, and triglycerides into fatty acids are all examples of:

Accepted Answer

Catabolism

Question 17

The breakdown and digestion of carbohydrates is considered to be an _____ process.

Accepted Answer

Catabolic

Question 18

Anabolism involves the conversion of _____ molecules into _____ molecules, and energy is _____.

Accepted Answer

Small; large; consumed

Question 19

What is the $$[\mathrm{H^+}]$$ concentration of a solution that has a pH of 11.47?

Accepted Answer

$$3.39 	imes 10$$^{-12}$$ M

Question 20

Write the equilibrium expression for the following reaction: $$\mathrm{C_2$ (g) + 2 I_2$ (g) \rightleftharpoons CI_4$ (g)}$$

Accepted Answer

$$K_{eq} = \dfrac{[CI_4$]}{[C_2$][I_2$]^2}$$

General Chemistry Study Notes: Acid-Base Equilibrium, Biomolecules, and Biochemical Processes

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