Question 1

Which of the following changes in blood pH would you expect to observe in a hyperventilating patient, and what are those changes called?

Accepted Answer

A)  a drop in pH, alkalosis 
B)  a drop in pH, acidosis 
C)  an increase in pH, alkalosis 
D)  an increase in pH, acidosis 
E)  There will not be any change in blood pH. 
A)  a drop in pH, alkalosis 
B)  a drop in pH, acidosis 
C)  an increase in pH, alkalosis 
D)  an increase in pH, acidosis 
E)  There will not be any change in blood pH.

Question 2

Select the choice that correctly states whether the substance is an acid or a base.

Accepted Answer

A)  Vinegar is basic. 
B)  Amines are basic. 
C)  Gastric juice is basic. 
D)  Sodium hydroxide is acidic. 
E)  Morphine is acidic. 
A)  Vinegar is basic. 
B)  Amines are basic. 
C)  Gastric juice is basic. 
D)  Sodium hydroxide is acidic. 
E)  Morphine is acidic.

Question 3

A conjugate acid-base pair is

Accepted Answer

A)  the reactants in an acid-base reaction. 
B)  the products of an acid-base reaction. 
C)  two species that differ only by a proton. 
D)  two species that differ only by a hydroxyl group. 
E)  a single molecule that can act as both an acid and a base. 
A)  the reactants in an acid-base reaction. 
B)  the products of an acid-base reaction. 
C)  two species that differ only by a proton. 
D)  two species that differ only by a hydroxyl group. 
E)  a single molecule that can act as both an acid and a base.

Question 4

Which of the following would be the best treatment of metabolic acidosis?

Accepted Answer

A)  the IV administration of an acid 
B)  the IV administration of a weak base 
C)  breathing into a paper bag 
D)  the IV administration of HCl 
E)  reducing breathing rate 
A)  the IV administration of an acid 
B)  the IV administration of a weak base 
C)  breathing into a paper bag 
D)  the IV administration of HCl 
E)  reducing breathing rate

Question 5

Not all protons in a molecule can be donated in an acid-base reaction. Below are three molecules, each with the proton donated in an acid-base reaction circled. What do these protons have in common?

Accepted Answer

A)  They are all attached to oxygen. 
B)  They are all in a carbon-containing molecule. 
C)  They are all attached to the most electronegative atom in the molecule. 
D)  They are the only hydrogens in the molecule. 
E)  They are all attached to carbon. 
A)  They are all attached to oxygen. 
B)  They are all in a carbon-containing molecule. 
C)  They are all attached to the most electronegative atom in the molecule. 
D)  They are the only hydrogens in the molecule. 
E)  They are all attached to carbon.

Question 6

The reaction between acetic acid and water is given below, followed by a list of changes that could be made to the reaction solution. Which of these changes will result in the equilibrium shifting to the left?   Changes that could be made to the solution I. adding more CH3COOH
II) removing H2O
III) removing H3O+
IV) adding more CH3COOF1F1F1S1F1F1F10

Accepted Answer

A)  All of these changes will result in the equilibrium shifting to the left. 
B)  Only I will result in the equilibrium shifting to the left. 
C)  Only IV will result in the equilibrium shifting to the left. 
D)  I and III will result in the equilibrium shifting to the left. 
E)  II and IV will result in the equilibrium shifting to the left. 
A)  All of these changes will result in the equilibrium shifting to the left. 
B)  Only I will result in the equilibrium shifting to the left. 
C)  Only IV will result in the equilibrium shifting to the left. 
D)  I and III will result in the equilibrium shifting to the left. 
E)  II and IV will result in the equilibrium shifting to the left.

Question 7

Which of the following statements about bases is NOT true?

Accepted Answer

A)  A base decreases the concentration of hydronium in solution. 
B)  An example of a base is Ca(OH)2. 
C)  A base increases the concentration of hydroxide in solution. 
D)  A base is a proton acceptor. 
E)  A base is always negatively charged. 
A)  A base decreases the concentration of hydronium in solution. 
B)  An example of a base is Ca(OH)2. 
C)  A base increases the concentration of hydroxide in solution. 
D)  A base is a proton acceptor. 
E)  A base is always negatively charged.

Question 8

What is the [H3O+] in a solution that has a [OHF1F1F1S1F1F1F10] of 3.2 F1F1F1S1F1F1F10 10F1F1F1S1F1F1F104 M?

Accepted Answer

A)  3.2 F1F1F1S1F1F1F10 10F1F1F1S1F1F1F1010 M 
B)  3.2 F1F1F1S1F1F1F10 1010 M 
C)  3.1 F1F1F1S1F1F1F10 10F1F1F1S1F1F1F1011 M 
D)  3.1 F1F1F1S1F1F1F10 1011 M 
E)  1.0 F1F1F1S1F1F1F10 10F1F1F1S1F1F1F107 M 
A)  3.2 F1F1F1S1F1F1F10 10F1F1F1S1F1F1F1010 M 
B)  3.2 F1F1F1S1F1F1F10 1010 M 
C)  3.1 F1F1F1S1F1F1F10 10F1F1F1S1F1F1F1011 M 
D)  3.1 F1F1F1S1F1F1F10 1011 M 
E)  1.0 F1F1F1S1F1F1F10 10F1F1F1S1F1F1F107 M

Question 9

Which of the following compounds is a Brønsted Lowry base, but not an Arrhenius base?

Accepted Answer

A)  HCl 
B)  NaOH 
C)  NH3 
D)  Ca(OH)2 
E)  CH3COOH 
A)  HCl 
B)  NaOH 
C)  NH3 
D)  Ca(OH)2 
E)  CH3COOH

Question 10

Which of the following is NOT a common use of a base?

Accepted Answer

A)  Many fruits get their sour or tart taste from bases. 
B)  Amino acids contain bases. 
C)  Many pharmaceuticals are bases. 
D)  Cleaning agents are often bases. 
E)  Neurotransmitters are bases. 
A)  Many fruits get their sour or tart taste from bases. 
B)  Amino acids contain bases. 
C)  Many pharmaceuticals are bases. 
D)  Cleaning agents are often bases. 
E)  Neurotransmitters are bases.

Question 11

All acid-base reactions that we consider in this chapter occur in

Accepted Answer

A)  acidic solution. 
B)  basic solution. 
C)  neutral solution. 
D)  water. 
E)  nonpolar solvents. 
A)  acidic solution. 
B)  basic solution. 
C)  neutral solution. 
D)  water. 
E)  nonpolar solvents.

Question 12

In the acid-base reaction between ammonia and water, which of the following substances are present at equilibrium?

Accepted Answer

A)  Ammonia, water, ammonium, and hydroxide are all present at equilibrium. 
B)  Only ammonia and water are present at equilibrium. 
C)  Only ammonium and hydroxide are present at equilibrium. 
D)  Only hydroxide and hydronium are present at equilibrium. 
E)  It is not possible to say which molecules will be present at equilibrium. 
A)  Ammonia, water, ammonium, and hydroxide are all present at equilibrium. 
B)  Only ammonia and water are present at equilibrium. 
C)  Only ammonium and hydroxide are present at equilibrium. 
D)  Only hydroxide and hydronium are present at equilibrium. 
E)  It is not possible to say which molecules will be present at equilibrium.

Question 13

Which of the statements best describes the following reaction?

Accepted Answer

A)  This reaction is the dissociation of a strong acid. 
B)  This reaction is the dissociation of a weak acid. 
C)  This is the reaction of a strong base. 
D)  This is the reaction of a weak base. 
E)  This is not an acid-base reaction. 
A)  This reaction is the dissociation of a strong acid. 
B)  This reaction is the dissociation of a weak acid. 
C)  This is the reaction of a strong base. 
D)  This is the reaction of a weak base. 
E)  This is not an acid-base reaction.

Question 14

How do strong and weak acids differ?

Accepted Answer

A)  Strong acids dissociate completely in aqueous solution and weak acids don't. 
B)  Only strong acids produce hydronium in aqueous solution. 
C)  Strong acids donate protons and weak acids do not. 
D)  Strong acids increase the concentration of -OH in solution. 
E)  Weak acids degrade less readily than strong acids. 
A)  Strong acids dissociate completely in aqueous solution and weak acids don't. 
B)  Only strong acids produce hydronium in aqueous solution. 
C)  Strong acids donate protons and weak acids do not. 
D)  Strong acids increase the concentration of -OH in solution. 
E)  Weak acids degrade less readily than strong acids.

Question 15

Which of the following molecules is amphoteric?

Accepted Answer

A)  CH3NH2 
B)  CH3OH 
C)  CH3COOH 
D)  H2SO4 
E)  NaOH 
A)  CH3NH2 
B)  CH3OH 
C)  CH3COOH 
D)  H2SO4 
E)  NaOH

Question 16

The boxed species in the following reaction is

Accepted Answer

A)  hydroxide. 
B)  hydronium. 
C)  a proton. 
D)  the acid. 
E)  the base. 
A)  hydroxide. 
B)  hydronium. 
C)  a proton. 
D)  the acid. 
E)  the base.

Question 17

Metabolic acidosis is a type of acid-base imbalance that results in a low blood pH. It can lead to a range of symptoms including headaches, confusion, lethargy, and even death due to heart failure when the blood pH drops below 7.0. In which of the following circumstances would you suspect metabolic acidosis?

Accepted Answer

A)  a bulimic patient who throws up several times a day 
B)  a bulimic patient who abuses diuretics to urinate frequently 
C)  a patient who is unable to urinate 
D)  a patient complaining of excess sweating 
E)  All of the above 
A)  a bulimic patient who throws up several times a day 
B)  a bulimic patient who abuses diuretics to urinate frequently 
C)  a patient who is unable to urinate 
D)  a patient complaining of excess sweating 
E)  All of the above

Question 18

Which of the following molecules is a base?

Accepted Answer

A)    
B)   
C)   
D)   
E)   
A)    
B)   
C)   
D)   
E)

Question 19

The following figure illustrates the action of a HF and FF1F1F1S1F1F1F10 buffer where the sizes of the boxes are proportional to the concentrations of HF and FF1F1F1S1F1F1F10 in solution. Which of the following chemical equations represents the reaction that occurs when -OH is added to the HF/FF1F1F1S1F1F1F10 buffer?

Accepted Answer

A)  HF + H2O   FF1F1F1S1F1F1F10 + H3O+ 
B)  FF1F1F1S1F1F1F10 + H2O   FF1F1F1S1F1F1F10 + F1F1F1S1F1F1F10OH 
C)  HF + F1F1F1S1F1F1F10OH   FF1F1F1S1F1F1F10 + H2O 
D)  FF1F1F1S1F1F1F10 + 2 F1F1F1S1F1F1F10OH   HF + O2 
E)  FF1F1F1S1F1F1F10 + F1F1F1S1F1F1F10OH   HOF 
A)  HF + H2O   FF1F1F1S1F1F1F10 + H3O+ 
B)  FF1F1F1S1F1F1F10 + H2O   FF1F1F1S1F1F1F10 + F1F1F1S1F1F1F10OH 
C)  HF + F1F1F1S1F1F1F10OH   FF1F1F1S1F1F1F10 + H2O 
D)  FF1F1F1S1F1F1F10 + 2 F1F1F1S1F1F1F10OH   HF + O2 
E)  FF1F1F1S1F1F1F10 + F1F1F1S1F1F1F10OH   HOF

Question 20

At physiological pH, phosphate esters, such as the molecule of methyl phosphate shown below, are ionized. Which of the following choices is the ionized form of a phosphate ester?

Accepted Answer

A)   
B)   
C)   
D)   
E)   
A)   
B)   
C)   
D)   
E)

Which of the following changes in blood pH would you expect to observe in a hyperventilating patient, and what are those changes called?

Select the choice that correctly states whether the substance is an acid or a base.

A conjugate acid-base pair is

Which of the following would be the best treatment of metabolic acidosis?

Not all protons in a molecule can be donated in an acid-base reaction. Below are three molecules, each with the proton donated in an acid-base reaction circled. What do these protons have in common?

Which of the following statements about bases is NOT true?

What is the [H₃O⁺] in a solution that has a [OH^] of 3.2  10^⁴ M?

Which of the following compounds is a Brønsted Lowry base, but not an Arrhenius base?

Which of the following is NOT a common use of a base?

All acid-base reactions that we consider in this chapter occur in

In the acid-base reaction between ammonia and water, which of the following substances are present at equilibrium?

Which of the statements best describes the following reaction?

How do strong and weak acids differ?

Which of the following molecules is amphoteric?

The boxed species in the following reaction is

Which of the following molecules is a base?

The following figure illustrates the action of a HF and F^ buffer where the sizes of the boxes are proportional to the concentrations of HF and F^ in solution. Which of the following chemical equations represents the reaction that occurs when ^-OH is added to the HF/F^ buffer?

At physiological pH, phosphate esters, such as the molecule of methyl phosphate shown below, are ionized. Which of the following choices is the ionized form of a phosphate ester?

Measuring Matter and Energy

Atomic Structure and Nuclear Radiation

Compounds and Molecules

Chemical Quantities and Chemical Reactions

Changes of State and the Gas Laws

Organic Chemistry: Hydrocarbons

Organic Chemistry and Biomolecules

Solutions, Colloids and Membranes

The Reactions of Organic Functional Groups in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

Energy and Metabolism

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Exam 9: Acids and Bases

Which of the following changes in blood pH would you expect to observe in a hyperventilating patient, and what are those changes called?

Select the choice that correctly states whether the substance is an acid or a base.

A conjugate acid-base pair is

Which of the following would be the best treatment of metabolic acidosis?

Not all protons in a molecule can be donated in an acid-base reaction. Below are three molecules, each with the proton donated in an acid-base reaction circled. What do these protons have in common?

Which of the following statements about bases is NOT true?

What is the [H3O+] in a solution that has a [OH] of 3.2  104 M?

Which of the following compounds is a Brønsted Lowry base, but not an Arrhenius base?

Which of the following is NOT a common use of a base?

All acid-base reactions that we consider in this chapter occur in

In the acid-base reaction between ammonia and water, which of the following substances are present at equilibrium?

Which of the statements best describes the following reaction?

How do strong and weak acids differ?

Which of the following molecules is amphoteric?

The boxed species in the following reaction is

Which of the following molecules is a base?

The following figure illustrates the action of a HF and F buffer where the sizes of the boxes are proportional to the concentrations of HF and F in solution. Which of the following chemical equations represents the reaction that occurs when -OH is added to the HF/F buffer?

At physiological pH, phosphate esters, such as the molecule of methyl phosphate shown below, are ionized. Which of the following choices is the ionized form of a phosphate ester?

Measuring Matter and Energy

Atomic Structure and Nuclear Radiation

Compounds and Molecules

Chemical Quantities and Chemical Reactions

Changes of State and the Gas Laws

Organic Chemistry: Hydrocarbons

Organic Chemistry and Biomolecules

Solutions, Colloids and Membranes

The Reactions of Organic Functional Groups in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

Energy and Metabolism

Filters

What is the [H₃O⁺] in a solution that has a [OH^] of 3.2  10^⁴ M?

The following figure illustrates the action of a HF and F^ buffer where the sizes of the boxes are proportional to the concentrations of HF and F^ in solution. Which of the following chemical equations represents the reaction that occurs when ^-OH is added to the HF/F^ buffer?