Question 1

Bases feel slippery.

Accepted Answer

A) True 
 B)False  True

Question 2

A solution at 25°C has a hydrogen ion concentration of 2.6 × 10-5 M.Which of the following is TRUE?

Accepted Answer

A) [H3O+] > [OH-] 
B) [H3O+] -] 
C) [H3O+] = [OH-] 
D) [H3O+] =   
E) none of the above 
A) [H3O+] > [OH-] 
B) [H3O+] -] 
C) [H3O+] = [OH-] 
D) [H3O+] =   
E) none of the above A

Question 3

Water always acts as an acid in reactions.

Accepted Answer

A) True 
 B)False  False

Question 4

Which of the following statements are TRUE of buffer solutions? 
1.A buffer solution can be made by mixing equal concentrations of
Acetic acid and sodium acetate.
2.A buffer solution can be made by mixing equal concentrations of
Hydrochloric acid and sodium chloride.
3.A buffer solution resists changes in pH when small quantities of acid
Or base are added.

Accepted Answer

A) 1 and 2 only 
B) 2 and 3 only 
C) 1 and 3 only 
D) All of 1,2,and 3 
E) None of 1,2,and 3 
A) 1 and 2 only 
B) 2 and 3 only 
C) 1 and 3 only 
D) All of 1,2,and 3 
E) None of 1,2,and 3

Question 5

A solution with a concentration of 0.000 000 1 M HCl would be an acidic solution.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following is NOT an acid-base conjugate pair?

Accepted Answer

A) H2CO3 and HCO3- 
B) H2O and OH- 
C) H2S and OH- 
D) NH4+ and NH3 
E) none of the above 
A) H2CO3 and HCO3- 
B) H2O and OH- 
C) H2S and OH- 
D) NH4+ and NH3 
E) none of the above

Question 7

In general,the stronger the acid,the weaker is its conjugate base.

Accepted Answer

A) True 
 B)False

Question 8

What is the concentration of H+ in a solution with pH = 2.50?

Accepted Answer

A) 4.5 M 
B) 1.3 M 
C) 0.0032 M 
D) 0.40 M 
E) none of the above 
A) 4.5 M 
B) 1.3 M 
C) 0.0032 M 
D) 0.40 M 
E) none of the above

Question 9

Which of the following statements about water are TRUE?

Accepted Answer

A) Water can act as an acid. 
B) Water can act as a base. 
C) The conjugate base of water is OH-. 
D) The conjugate acid of water is H3O+. 
E) All of the above are true. 
A) Water can act as an acid. 
B) Water can act as a base. 
C) The conjugate base of water is OH-. 
D) The conjugate acid of water is H3O+. 
E) All of the above are true.

Question 10

The burning of fossil fuels produces nitrogen oxides and sulfur oxides which can react to form acid rain (nitric and sulfuric acids).

Accepted Answer

A) True 
 B)False

Question 11

Bases have a bitter taste.

Accepted Answer

A) True 
 B)False

Question 12

The products of a neutralization reaction are carbon dioxide and water.

Accepted Answer

A) True 
 B)False

Question 13

The ion product constant for water (Kw)is best stated as Kw = [H2O] [H+].

Accepted Answer

A) True 
 B)False

Question 14

The Arrhenius definition of an acid is:

Accepted Answer

A) a proton donor. 
B) a proton acceptor. 
C) produces H⁺ in solution. 
D) produces OH⁻ in solution. 
E) none of the above 
A) a proton donor. 
B) a proton acceptor. 
C) produces H⁺ in solution. 
D) produces OH⁻ in solution. 
E) none of the above

Question 15

The conjugate base to HSO4- is SO42-.

Accepted Answer

A) True 
 B)False

Question 16

Carboxylic acids can be found in:

Accepted Answer

A) grapes. 
B) apples. 
C) lemons. 
D) all of the above 
E) none of these 
A) grapes. 
B) apples. 
C) lemons. 
D) all of the above 
E) none of these

Question 17

A strong acid must also be a strong electrolyte.

Accepted Answer

A) True 
 B)False

Question 18

Bases feel slippery because they react with oils on your skin to form soap-like substances.

Accepted Answer

A) True 
 B)False

Question 19

The titration of 25.00 mL a 0.125 M HClO4 solution required 21.37 mL of KOH to reach the endpoint.What is the concentration of the KOH?

Accepted Answer

A) 0.292 M 
B) 0.0668 M 
C) 0.146 M 
D) 0.134 M 
E) none of the above 
A) 0.292 M 
B) 0.0668 M 
C) 0.146 M 
D) 0.134 M 
E) none of the above

Question 20

What is the concentration of the hydroxide ion given that the concentration of the hydronium ion is   ?

Accepted Answer

A) 6.7 ×   M 
B) 1.5   M 
C) 1.0   M 
D) 1.0   M 
E) none of the above 
A) 6.7 ×   M 
B) 1.5   M 
C) 1.0   M 
D) 1.0   M 
E) none of the above

Bases feel slippery.

A solution at 25°C has a hydrogen ion concentration of 2.6 × 10^-5 M.Which of the following is TRUE?

Water always acts as an acid in reactions.

A solution with a concentration of 0.000 000 1 M HCl would be an acidic solution.

Which of the following is NOT an acid-base conjugate pair?

In general,the stronger the acid,the weaker is its conjugate base.

What is the concentration of H⁺ in a solution with pH = 2.50?

Which of the following statements about water are TRUE?

The burning of fossil fuels produces nitrogen oxides and sulfur oxides which can react to form acid rain (nitric and sulfuric acids).

Bases have a bitter taste.

The products of a neutralization reaction are carbon dioxide and water.

The ion product constant for water (K_w)is best stated as K_w = [H₂O] [H⁺].

The Arrhenius definition of an acid is:

The conjugate base to HSO₄^- is SO₄^2-.

Carboxylic acids can be found in:

A strong acid must also be a strong electrolyte.

Bases feel slippery because they react with oils on your skin to form soap-like substances.

The titration of 25.00 mL a 0.125 M HClO₄ solution required 21.37 mL of KOH to reach the endpoint.What is the concentration of the KOH?

What is the concentration of the hydroxide ion given that the concentration of the hydronium ion is ?

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Exam 14: Acids and Bases

Bases feel slippery.

A solution at 25°C has a hydrogen ion concentration of 2.6 × 10-5 M.Which of the following is TRUE?

Water always acts as an acid in reactions.

A solution with a concentration of 0.000 000 1 M HCl would be an acidic solution.

Which of the following is NOT an acid-base conjugate pair?

In general,the stronger the acid,the weaker is its conjugate base.

What is the concentration of H+ in a solution with pH = 2.50?

Which of the following statements about water are TRUE?

The burning of fossil fuels produces nitrogen oxides and sulfur oxides which can react to form acid rain (nitric and sulfuric acids).

Bases have a bitter taste.

The products of a neutralization reaction are carbon dioxide and water.

The ion product constant for water (Kw)is best stated as Kw = [H2O] [H+].

The Arrhenius definition of an acid is:

The conjugate base to HSO4- is SO42-.

Carboxylic acids can be found in:

A strong acid must also be a strong electrolyte.

Bases feel slippery because they react with oils on your skin to form soap-like substances.

The titration of 25.00 mL a 0.125 M HClO4 solution required 21.37 mL of KOH to reach the endpoint.What is the concentration of the KOH?

What is the concentration of the hydroxide ion given that the concentration of the hydronium ion is ?

The Chemical World

Measurement and Problem Solving

Matter and Energy

Atoms and Elements

Molecules and Compounds

Chemical Composition

Chemical Reactions

Quantities in Chemical Reactions

Electrons in Atoms and the Periodic Table

Chemical Bonding

Gases

Liquids, solids, and Intermolecular Forces

Solutions

Chemical Equilibrium

Oxidation and Reduction

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

Filters

A solution at 25°C has a hydrogen ion concentration of 2.6 × 10^-5 M.Which of the following is TRUE?

What is the concentration of H⁺ in a solution with pH = 2.50?

The ion product constant for water (K_w)is best stated as K_w = [H₂O] [H⁺].

The conjugate base to HSO₄^- is SO₄^2-.

The titration of 25.00 mL a 0.125 M HClO₄ solution required 21.37 mL of KOH to reach the endpoint.What is the concentration of the KOH?