Question 1

The substance NaOH(aq)is

Accepted Answer

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

Question 2

Which of the following statements regarding acids is incorrect?

Accepted Answer

An acid can be a weak electrolyte, such as acetic acid, which only partially dissociates in aqueous solution.

Question 3

Which of the following statements regarding bases is incorrect?

Accepted Answer

A base is a substance that will turn red litmus paper blue, not the other way around.

Question 4

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

Accepted Answer

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

Question 5

The substance HNO₃(aq)is

Accepted Answer

HNO₃(aq), or nitric acid, is a strong acid because it completely dissociates in water to produce H⁺ ions.

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)

Accepted Answer

HOCl donates a proton to H2O, making it the acid, while H2O accepts a proton, making it the base. The products are OCl−, the conjugate base, and H3O+, the conjugate acid.

Question 7

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

Accepted Answer

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

Question 8

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

Accepted Answer

Methyl amine is not commonly found in household products or antacids. The other choices (A, B, C, and D) are all commonly found in household products or antacids.

Question 9

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

Accepted Answer

CH₃CO₂H is the acid, H₂O is the base, H₃O⁺ is the conjugate acid, and CH₃CO₂⁻ is the conjugate base.

Question 10

The substance NH₃(aq)is

Accepted Answer

NH₃(aq), or aqueous ammonia, is a weak base because it partially ionizes in water to form NH₄⁺ and OH⁻ ions.

Question 11

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)

Accepted Answer

In the reverse direction, the products become the reactants and vice versa. Therefore, the acid in the reverse direction is H₃O.

Question 12

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

Accepted Answer

An attribute of an acid is that it is an electrolyte, meaning it produces ions in aqueous solution. Therefore, choice B is not an attribute of an acid.

Question 13

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

Accepted Answer

Sulfuric acid is a strong and highly corrosive acid that is not found in natural foods or beverages. It is a man-made industrial chemical and should not be consumed. The other options, citric acid, acetic acid, phosphoric acid, and carbonic acid, are all naturally occurring acids in various foods and beverages.

Question 14

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

Accepted Answer

Bases would taste bitter, not sour.

Question 15

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)

Accepted Answer

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

Question 16

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)

Accepted Answer

In the reverse reaction, H₃O⁺ (hydrosulfuric acid, H2SO3) donates a proton (H+) to the base (CN⁻, thiocyanate ion), making it the acid.

Question 17

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)

Accepted Answer

In the reverse direction, F⁻ acts as a base by accepting a proton from H₂O to form HF and H₃O⁺.

Question 18

The substance Mg(OH)₂(aq)is

Accepted Answer

Mg(OH)2 is a strong base as it is a hydroxide compound of a Group 2 element. The additional ₂ attached to it does not change its basic properties.

Question 19

The substance HCl(aq)is

Accepted Answer

HCl(aq) is a strong acid because it ionizes completely in water to form H+ cations and Cl- anions. This makes it a proton (H+) donor, resulting in a low pH and strong acidity.

Question 20

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

Accepted Answer

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

Quiz 13: Acids and Bases

The substance NaOH(aq) is

Which of the following statements regarding acids is incorrect?

Which of the following statements regarding bases is incorrect?

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

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 NH₃(aq) is

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 is not an attribute of an acid?

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

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 base? HCN(aq) + H₂O(l) ⇌ CN⁻ (aq) + H₃O⁺(aq)

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)

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 Mg(OH) ₂(aq) is

The substance HCl(aq) is

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

Quiz 13: Acids and Bases

The substance NaOH(aq) is

Which of the following statements regarding acids is incorrect?

Which of the following statements regarding bases is incorrect?

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

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 NH3(aq) is

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 is not an attribute of an acid?

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

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 base? HCN(aq) + H2O(l) ⇌ CN− (aq) + H3O+(aq)

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)

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 Mg(OH) 2(aq) is

The substance HCl(aq) is

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

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

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 NH₃(aq) is

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)

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)

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)

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 Mg(OH) ₂(aq) is

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