Question 1

Which of the following is not an attribute of an acid? A)It provides H⁺ ions in aqueous solution. B)It is a nonelectrolyte. C)It tastes sour. D)It reacts with some organic dyes to cause them to change color. E)It reacts with active metals.

Accepted Answer

An attribute of an acid is that it is an electrolyte, meaning it dissociates into ions in aqueous solution. Option A is also incorrect as it is not a universal attribute of all acids but rather specific to some. Options C, D, and E are all correct attributes of acids.

Question 2

The substance HCl(aq) is:
A)a strong acid.
B)a weak acid.
C)a strong base.
D)a weak base.
E)neither an acid nor a base.

Accepted Answer

HCl(aq) is a strong acid because it completely dissociates in water to produce H+ ions and Cl- ions.

Question 3

The substance NH₃(aq) is: A)a strong acid. B)a weak acid. C)a strong base. D)a weak base. E)neither an acid nor a base.

Accepted Answer

E

Question 4

When the following reaction goes in the reverse direction (from products to reactants), what is the base? HCN(aq) + H₂O(l) ⇌ CN^-(aq) + H₃O⁺(aq) A)HCN B)H₂O C)CN^- D)H₃O⁺ E)both CN^- and H₃O⁺

Accepted Answer

In the reverse reaction, CN⁻ acts as the base because it accepts a proton from H₃O⁺ to form HCN.

Question 5

The substance HNO₃(aq) is: A)a strong acid. B)a weak acid. C)a strong base. D)a weak base. E)neither an acid nor a base.

Accepted Answer

The answer of The substance HNO₃(aq) is: A)a strong acid. B)a weak...

Question 6

List the acid, base, conjugate acid, and conjugate base, in that order, for the following reaction: HOCl(aq) + H₂O(l) ⇌ OCl^-(aq) + H₃O⁺(aq) A) B) C) D) E)

Accepted Answer

The answer of List the acid, base, conjugate acid, and...

Question 7

Select the two Brønsted-Lowry acids in the following equation: HNO₂(aq) + H₂O(l) ⇌ NO₂^-(aq) + H₃O⁺(aq) A)HNO₂ and H₂O B)HNO₂ and NO₂^- C)HNO₂and H₃O⁺ D)H₂O and H₃O⁺ E)NO₂^- and H₃O⁺

Accepted Answer

HNO₂ donates a proton (H⁺) to H₂O, forming H₃O⁺. Therefore, HNO₂ is a Brønsted-Lowry acid. H₃O⁺ is also a Brønsted-Lowry acid because it can donate a proton to NO₂^-.

Question 8

When the following reaction goes in the reverse direction (from products to reactants), what is the base? HF(aq) + H₂O(l) ⇌ F^-(aq) + H₃O⁺(aq) A)HF B)H₂O C)F^- D)H₃O⁺ E)both F^- and H₃O⁺

Accepted Answer

In the reverse reaction, F^- acts as the base because it accepts a proton from H₃O⁺ to form HF.

Question 9

The substance NaOH(aq) is:
A)a strong acid.
B)a weak acid.
C)a strong base.
D)a weak base.
E)neither an acid nor a base.

Accepted Answer

NaOH(aq) is a strong base because it dissociates completely in water to form hydroxide ions (OH-) which can accept protons and react with acids.

Question 10

Select the two Brønsted-Lowry acids in the following equation: HF(aq) + H₂O(l) ⇌ F^-(aq) + H₃O⁺(aq) A)HF and H₂O B)HF and F^- C)H₂O and F^- D)HF and H₃O⁺ E)H₃O⁺and F^-

Accepted Answer

The answer of Select the two Brønsted-Lowry acids in the...

Question 11

Which of the following acids is not normally found in foods or beverages?
A)citric acid
B)acetic acid
C)phosphoric acid
D)carbonic acid
E)sulfuric acid

Accepted Answer

Sulfuric acid is a highly reactive and corrosive acid that is not typically found in foods or beverages. It is primarily used in industrial applications. The other acids listed (citric, acetic, phosphoric, and carbonic) are commonly found in various food and beverage products.

Question 12

Select the two Brønsted-Lowry acids in the following equation: HCN(aq) + H₂O(l) ⇌ CN^-(aq) + H₃O⁺(aq) A)HCN and H₂O B)HCN and CN^- C)H₂O and CN^- D)HCN and H₃O⁺ E)H₃O⁺and CN^-

Accepted Answer

The answer of Select the two Brønsted-Lowry acids in the...

Question 13

Which of the following statements regarding bases is incorrect? A)A base is a substance that may act as an antacid. B)A base is a substance that will not change the color of red litmus paper. C)A base is a substance that tastes bitter. D)A base is a substance that produces hydroxide ions, OH^-, in aqueous solution. E)A base is a substance that is an electrolyte.

Accepted Answer

A base is a substance that will change the color of red litmus paper to blue, not remain the same color.

Question 14

When the following reaction goes in the reverse direction (from products to reactants), what is the acid? HCN(aq) + H₂O(l) ⇌ CN^-(aq) + H₃O⁺(aq) A)HCN B)H₂O C)CN^- D)H₃O⁺ E)both CN^- and H₃O⁺

Accepted Answer

In the reverse reaction, H₃O⁺ donates a proton to CN^-, making it the acid.

Question 15

Which of the following bases is not commonly found in household products or antacids? A)sodium hydroxide, NaOH B)ammonia, NH₃ C)calcium carbonate, CaCO₃ D)magnesium hydroxide, Mg(OH)₂ E)methyl amine, CH₃NH₂

Accepted Answer

Methyl amine is not commonly found in household products or antacids. The other options (A-D) are commonly found in household products or antacids.

Question 16

List the acid, base, conjugate acid, and conjugate base, in that order, for the following reaction: CH₃CO₂H(aq) + H₂O(l) ⇌ CH₃CO₂^-(aq) + H₃O⁺(aq) A) B) C) D) E)

Accepted Answer

The answer of List the acid, base, conjugate acid, and...

Question 17

The substance Mg(OH)₂(aq) is: A)a strong acid. B)a weak acid. C)a strong base. D)a weak base. E)neither an acid nor a base.

Accepted Answer

Mg(OH)2 is a strong base due to the hydroxide ions (OH-) it produces in solution. The addition of ₂ does not change the fact that it is a strong base.

Question 18

Which of the following is not an attribute of a base? A)It provides OH^-ions in aqueous solution. B)It is an electrolyte. C)It reacts with some organic dyes to cause them to change color. D)It has the ability to neutralize acids. E)It tastes sour.

Accepted Answer

Bases have a bitter taste, while acids taste sour.

Question 19

When the following reaction goes in the reverse direction (from products to reactants), what is the acid? HF(aq) + H₂O(l) ⇌ F^-(aq) + H₃O⁺(aq) A)HF B)H₂O C)F^- D)H₃O⁺ E)both F^- and H₃O⁺

Accepted Answer

In the reverse reaction, H₃O⁺ donates a proton to F^-, acting as the acid.

Question 20

Which of the following statements regarding acids is incorrect? A)An acid will react with an active metal. B)An acid is a substance that will change the color of blue litmus paper. C)An acid is a substance that tastes sour. D)An acid is a substance that produces hydrogen ions, H⁺, (or H₃O⁺) in aqueous solution. E)An acid is always a strong electrolyte.

Accepted Answer

An acid is not always a strong electrolyte. Some acids may only partially ionize in aqueous solution, making them weak electrolytes.

Quiz 13: Acids and Bases

Which of the following is not an attribute of an acid?

The substance HCl(aq) is:

The substance NH₃(aq) is:

When the following reaction goes in the reverse direction (from products to reactants) , what is the base? HCN(aq) + H₂O(l) ⇌ CN^-(aq) + H₃O⁺(aq)

The substance HNO₃(aq) is:

List the acid, base, conjugate acid, and conjugate base, in that order, for the following reaction: HOCl(aq) + H₂O(l) ⇌ OCl^-(aq) + H₃O⁺(aq)

Select the two Brønsted-Lowry acids in the following equation: HNO₂(aq) + H₂O(l) ⇌ NO₂^-(aq) + H₃O⁺(aq)

When the following reaction goes in the reverse direction (from products to reactants) , what is the base? HF(aq) + H₂O(l) ⇌ F^-(aq) + H₃O⁺(aq)

The substance NaOH(aq) is:

Select the two Brønsted-Lowry acids in the following equation: HF(aq) + H₂O(l) ⇌ F^-(aq) + H₃O⁺(aq)

Which of the following acids is not normally found in foods or beverages?

Select the two Brønsted-Lowry acids in the following equation: HCN(aq) + H₂O(l) ⇌ CN^-(aq) + H₃O⁺(aq)

Which of the following statements regarding bases is incorrect?

When the following reaction goes in the reverse direction (from products to reactants) , what is the acid? HCN(aq) + H₂O(l) ⇌ CN^-(aq) + H₃O⁺(aq)

Which of the following bases is not commonly found in household products or antacids?

List the acid, base, conjugate acid, and conjugate base, in that order, for the following reaction: CH₃CO₂H(aq) + H₂O(l) ⇌ CH₃CO₂^-(aq) + H₃O⁺(aq)

The substance Mg(OH) ₂(aq) is:

Which of the following is not an attribute of a base?

When the following reaction goes in the reverse direction (from products to reactants) , what is the acid? HF(aq) + H₂O(l) ⇌ F^-(aq) + H₃O⁺(aq)

Which of the following statements regarding acids is incorrect?

Quiz 13: Acids and Bases

Which of the following is not an attribute of an acid?

The substance HCl(aq) is:

The substance NH3(aq) is:

When the following reaction goes in the reverse direction (from products to reactants) , what is the base? HCN(aq) + H2O(l) ⇌ CN-(aq) + H3O+(aq)

The substance HNO3(aq) is:

List the acid, base, conjugate acid, and conjugate base, in that order, for the following reaction: HOCl(aq) + H2O(l) ⇌ OCl-(aq) + H3O+(aq)

Select the two Brønsted-Lowry acids in the following equation: HNO2(aq) + H2O(l) ⇌ NO2-(aq) + H3O+(aq)

When the following reaction goes in the reverse direction (from products to reactants) , what is the base? HF(aq) + H2O(l) ⇌ F-(aq) + H3O+(aq)