Question 1

If a wine has fermented beyond the step that produces alcohol, it becomes acidic, making the wine taste ___.

Accepted Answer

The answer of If a wine has fermented beyond the...

Question 2

In your own words, describe how the HPO42-/H2PO4- buffer system stabilizes the pH inside a cell.

Accepted Answer

HPO₄^2- is basic and rea

Question 3

Which of the following is not a common characteristic of a base?

Accepted Answer

A)  it turns litmus pink/red 
B)  it feels slippery 
C)  it tastes bitter 
D)  all of these choices are common characteristics of bases 
A)  it turns litmus pink/red 
B)  it feels slippery 
C)  it tastes bitter 
D)  all of these choices are common characteristics of bases

Question 4

____ is a condition in which the pH of blood is below the normal range.

Accepted Answer

The answer of ____ is a condition in which the...

Question 5

Which of the following is the conjugate acid of the bicarbonate ion, HCO3-?

Accepted Answer

A)  H2CO3 
B)  CO32- 
C)  CO2 
D)  H3O+ 
A)  H2CO3 
B)  CO32- 
C)  CO2 
D)  H3O+

Question 6

Whenever an equilibrium constant, Keq, has a value greater than 1, which of the following statements is true at equilibrium?

Accepted Answer

A)  The concentration of reactants is greater than the concentration of the products. 
B)  The concentration of products is the same as the concentration of reactants. 
C)  The concentration of the products is greater than the concentration of the reactants. 
D)  Relative composition of reaction mixture cannot be predicted. 
A)  The concentration of reactants is greater than the concentration of the products. 
B)  The concentration of products is the same as the concentration of reactants. 
C)  The concentration of the products is greater than the concentration of the reactants. 
D)  Relative composition of reaction mixture cannot be predicted.

Question 7

In the following equation, identify the acid, base, conjugate acid, and conjugate base.

Accepted Answer

acid ___, base ___,

Question 8

Calculate the pH of a solution containing 0.15 moles KOH dissolved in enough water to produce 2 liters of solution.

Accepted Answer

A)  pH = 0.075 
B)  pH = 0.15 
C)  pH = 1.12 
D)  pH = 12.88 
A)  pH = 0.075 
B)  pH = 0.15 
C)  pH = 1.12 
D)  pH = 12.88

Question 9

A is red, B is colorless, and C is yellow. Initially the system is in equilibrium and has an orange color.
   What color will the system become if B is added?

Accepted Answer

The answer of A is red, B is colorless, and...

Question 10

For a buffer to continue to work effectively, the pH of a buffer has to be close to the pKa of the conjugate acid.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following is not a common characteristic of an acid?

Accepted Answer

A)  it turns litmus pink/red 
B)  it tastes bitter 
C)  it dissolves common metals 
D)  all of these choices are common characteristics of acids 
A)  it turns litmus pink/red 
B)  it tastes bitter 
C)  it dissolves common metals 
D)  all of these choices are common characteristics of acids

Question 12

Increasing the concentration of a ___ at equilibrium will drive the system toward the reactants.

Accepted Answer

The answer of Increasing the concentration of a ___ at...

Question 13

HNO3  can act as acid and as a base.

Accepted Answer

A) True 
 B)False

Question 14

In the reaction:
  NO2- is the

Accepted Answer

A)  conjugate base of H2O. 
B)  conjugate base of HNO2. 
C)  conjugate acid of HNO2. 
D)  conjugate base of H3O+. 
A)  conjugate base of H2O. 
B)  conjugate base of HNO2. 
C)  conjugate acid of HNO2. 
D)  conjugate base of H3O+.

Question 15

Which of the following is the conjugate acid of NH3?

Accepted Answer

A)  NH2- 
B)  NH4+ 
C)  HNO3 
D)  H3O+ 
A)  NH2- 
B)  NH4+ 
C)  HNO3 
D)  H3O+

Question 16

Which of the following is the conjugate base of the bicarbonate ion, HCO3-?

Accepted Answer

A)  H2CO3 
B)  CO32- 
C)  CO2 
D)  H3O+ 
A)  H2CO3 
B)  CO32- 
C)  CO2 
D)  H3O+

Question 17

A conjugate acid-base pair

Accepted Answer

A)  is related by the loss and gain of H+ between 2 corresponding compounds on opposite sides of the reaction arrow. 
B)  has the base donating an H+ to form its conjugate base. 
C)  has the acid donating an H+ to form its conjugate acid. 
D)  is not related in any way. 
A)  is related by the loss and gain of H+ between 2 corresponding compounds on opposite sides of the reaction arrow. 
B)  has the base donating an H+ to form its conjugate base. 
C)  has the acid donating an H+ to form its conjugate acid. 
D)  is not related in any way.

Question 18

15.00 mL of 0.100 M NaOH is required to completely neutralize 25.00 mL of an HCl solution. What is the concentration of the HCl solution?

Accepted Answer

A)  0.0600 M 
B)  0.100 M 
C)  0.167 M 
D)  1.50 M 
A)  0.0600 M 
B)  0.100 M 
C)  0.167 M 
D)  1.50 M

Question 19

Calculate the pH of solution produced by dissolving 0.001 moles of HNO3 in a liter of water. Assume complete dissociation.

Accepted Answer

A)  pH = 3.0 
B)  pH = 0.001 
C)  pH = 1 x 10-3 
D)  pH = 1 x 103 
A)  pH = 3.0 
B)  pH = 0.001 
C)  pH = 1 x 10-3 
D)  pH = 1 x 103

Question 20

The equation:
  has the following equilibrium constant expression:

Accepted Answer

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

If a wine has fermented beyond the step that produces alcohol, it becomes acidic, making the wine taste ___.

In your own words, describe how the HPO₄^2-/H₂PO₄^- buffer system stabilizes the pH inside a cell.

Which of the following is not a common characteristic of a base?

____ is a condition in which the pH of blood is below the normal range.

Which of the following is the conjugate acid of the bicarbonate ion, HCO₃^-?

Whenever an equilibrium constant, K_eq, has a value greater than 1, which of the following statements is true at equilibrium?

In the following equation, identify the acid, base, conjugate acid, and conjugate base.

Calculate the pH of a solution containing 0.15 moles KOH dissolved in enough water to produce 2 liters of solution.

A is red, B is colorless, and C is yellow. Initially the system is in equilibrium and has an orange color. What color will the system become if B is added?

For a buffer to continue to work effectively, the pH of a buffer has to be close to the pK_aof the conjugate acid.

Which of the following is not a common characteristic of an acid?

Increasing the concentration of a ___ at equilibrium will drive the system toward the reactants.

HNO₃ can act as acid and as a base.

In the reaction: NO₂^- is the

Which of the following is the conjugate acid of NH₃?

Which of the following is the conjugate base of the bicarbonate ion, HCO₃^-?

A conjugate acid-base pair

15.00 mL of 0.100 M NaOH is required to completely neutralize 25.00 mL of an HCl solution. What is the concentration of the HCl solution?

Calculate the pH of solution produced by dissolving 0.001 moles of HNO₃ in a liter of water. Assume complete dissociation.

The equation: has the following equilibrium constant expression:

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Exam 7: Acids, Bases, and Equilibrium

If a wine has fermented beyond the step that produces alcohol, it becomes acidic, making the wine taste ___.

In your own words, describe how the HPO42-/H2PO4- buffer system stabilizes the pH inside a cell.

Which of the following is not a common characteristic of a base?

____ is a condition in which the pH of blood is below the normal range.

Which of the following is the conjugate acid of the bicarbonate ion, HCO3-?

Whenever an equilibrium constant, Keq, has a value greater than 1, which of the following statements is true at equilibrium?

In the following equation, identify the acid, base, conjugate acid, and conjugate base.

Calculate the pH of a solution containing 0.15 moles KOH dissolved in enough water to produce 2 liters of solution.

A is red, B is colorless, and C is yellow. Initially the system is in equilibrium and has an orange color. What color will the system become if B is added?

For a buffer to continue to work effectively, the pH of a buffer has to be close to the pKa of the conjugate acid.

Which of the following is not a common characteristic of an acid?

Increasing the concentration of a ___ at equilibrium will drive the system toward the reactants.

HNO3 can act as acid and as a base.

In the reaction: NO2- is the

Which of the following is the conjugate acid of NH3?

Which of the following is the conjugate base of the bicarbonate ion, HCO3-?

A conjugate acid-base pair

15.00 mL of 0.100 M NaOH is required to completely neutralize 25.00 mL of an HCl solution. What is the concentration of the HCl solution?

Calculate the pH of solution produced by dissolving 0.001 moles of HNO3 in a liter of water. Assume complete dissociation.

The equation: has the following equilibrium constant expression:

Science and Measurements

Atoms and Elements

Compounds

An Introduction to Organic Compounds

Reactions

Gases, Solutions, Colloids, and Suspensions

Organic Reactions Hydrocarbons, Carboxlic Acids, Amines, and Related Compounds

Organic Reactions 2-Alcohols, Ethers, Aldehydes, and Ketones

Carbohydrates

Lipids and Membranes

Peptides, Proteins, and Enzymes

Nucleic Acids

Metabolism

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In your own words, describe how the HPO₄^2-/H₂PO₄^- buffer system stabilizes the pH inside a cell.

Which of the following is the conjugate acid of the bicarbonate ion, HCO₃^-?

Whenever an equilibrium constant, K_eq, has a value greater than 1, which of the following statements is true at equilibrium?

For a buffer to continue to work effectively, the pH of a buffer has to be close to the pK_aof the conjugate acid.

HNO₃ can act as acid and as a base.

In the reaction: NO₂^- is the

Which of the following is the conjugate acid of NH₃?

Which of the following is the conjugate base of the bicarbonate ion, HCO₃^-?

Calculate the pH of solution produced by dissolving 0.001 moles of HNO₃ in a liter of water. Assume complete dissociation.