Question 1

Which property is NOT characteristic of acids?

Accepted Answer

Acids have a bitter taste.

Question 2

Which of the following statements best explains why James Bond's gold pen is not dissolved by most acids?

Accepted Answer

Gold is one of the few metals that is not dissolved by most acids.

Question 3

What is the Arrhenius definition of a base?

Accepted Answer

A base produces $$OH^-$$ ions in aqueous solution.

Question 4

Which acid is responsible for the sour taste of vinegar?

Accepted Answer

Acetic acid

Question 5

A solution has $$[H_3O^+] = 1.8 	imes 10$$^{-4}$$ M. What is its pH and is it acidic or basic?

Accepted Answer

pH = 3.74, acidic

Question 6

Which of the following is a Bronsted-Lowry base?

Accepted Answer

A substance that accepts a proton

Question 7

What is the net ionic equation for the neutralization of an acid and a base according to the Arrhenius definition?

Accepted Answer

$$H^+(aq) + OH^-(aq) \rightarrow H_2O(l)$$

Question 8

Which of the following is an example of a strong acid?

Accepted Answer

Hydrochloric acid ($$HCl)$$

Question 9

A 0.025 M solution of $$Sr(OH)_2 is $$prepared. What is the concentration of $$OH^-$$ ions?

Accepted Answer

$$0.050 M$$

Question 10

Which statement about weak acids is correct?

Accepted Answer

They only partially ionize in solution.

Question 11

What is the $$[OH^-] in $$pure water at $$25^\circ C$$?

Accepted Answer

$$1.0 	imes 10$$^{-7}$$ M

Question 12

Which of the following is an amphoteric substance?

Accepted Answer

Water ($$H_2O)$$

Question 13

A solution has $$[OH^-] = 1.5 	imes 10$$^{-2}$$ M. Is the solution acidic, basic, or neutral?

Accepted Answer

Basic

Question 14

Which of the following is a conjugate acid-base pair?

Accepted Answer

$$NH_3$$ and $$NH_4$$^+$$

Question 15

Which of the following is a property of bases?

Accepted Answer

Bases turn red litmus paper blue.

Question 16

What is the pH of a solution with $$[H_3O^+] = 1.0 	imes 10$$^{-7}$$ M at 25$$^\circ C$$?

Accepted Answer

7.00

Question 17

Which of the following is a real-world example of a base neutralizing an acid?

Accepted Answer

Sodium bicarbonate relieving heartburn

Question 18

Which equation represents the self-ionization of water?

Accepted Answer

$$2H_2O(l) \rightleftharpoons H_3O^+(aq) + OH^-(aq)$$

Question 19

Which of the following is true about the pH scale?

Accepted Answer

A decrease of 1 unit on the pH scale corresponds to a tenfold increase in $$[H_3O^+]$$ concentration.

Acids and Bases: Key Concepts and Applications

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