Using Acid Dissociation Constant (Ka) - AP Chemistry
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Which of the following is what determines the strength of an acid?
Which of the following is what determines the strength of an acid?
The Ka is the acid dissociation constant, and thus it is what determines how strong the acid is. Stronger acids dissociate to a greater extent and produce lower pH values.
The Ka is the acid dissociation constant, and thus it is what determines how strong the acid is. Stronger acids dissociate to a greater extent and produce lower pH values.
Compare your answer with the correct one above
What is the concentration of hydronium ions in a solution if the hydroxide ion concentration is 
?
What is the concentration of hydronium ions in a solution if the hydroxide ion concentration is
For every acidic or basic solution, the product of the hydroxide ion concentration and the hydronium ion concentration will be equal to 
, the dissociation constant for water. In other words:
Since we are given the hydroxide ion concentration, we can determine the hydronium ion concentration using this equation.
For every acidic or basic solution, the product of the hydroxide ion concentration and the hydronium ion concentration will be equal to
Since we are given the hydroxide ion concentration, we can determine the hydronium ion concentration using this equation.
Compare your answer with the correct one above
A student has a 0.50M solution of acetic acid. She adds solid sodium acetate until the concentration of sodium acetate is 0.050M. What is the final pH of the solution?
The 
for acetic acid is 
. Assume the volume remains constant.
A student has a 0.50M solution of acetic acid. She adds solid sodium acetate until the concentration of sodium acetate is 0.050M. What is the final pH of the solution?
The
Acetic acid is a weak acid, and its dissociation reaction is written as:
Using an ICE table, we can find the pH of the solution when the sodium acetate is added:
I: There is initially a 0.50M concentration of acetic acid. Because sodium acetate will dissolve completely, there will be a 0.050M concentration of acetate ions in the solution.
C: As acetic acid dissociates, the concentrations of acetate ions and hydronium ions will increase by an unknown concentration 
. Conversely, the acetic acid concentration will decrease by the same amount.
E: By setting the equilibrium expression equal to the acid equilibrium constant, we can solve for the value of 
.
*Because the value for 
will be so much lower than the initial concentration, we can omit it from the acetate expression as well as the acetic acid concentration:
Keep in mind that 
is equal to the concentration of hydronium ions now in the solution.
Use this value in the equation for pH:
Acetic acid is a weak acid, and its dissociation reaction is written as:
Using an ICE table, we can find the pH of the solution when the sodium acetate is added:
I: There is initially a 0.50M concentration of acetic acid. Because sodium acetate will dissolve completely, there will be a 0.050M concentration of acetate ions in the solution.
C: As acetic acid dissociates, the concentrations of acetate ions and hydronium ions will increase by an unknown concentration
E: By setting the equilibrium expression equal to the acid equilibrium constant, we can solve for the value of
*Because the value for
Keep in mind that
Use this value in the equation for pH:
Compare your answer with the correct one above
What property distinguishes a strong acid from a weak acid?
What property distinguishes a strong acid from a weak acid?
The acid dissociation constant (Ka) is used to distinguish strong acids from weak acids. Strong acids have exceptionally high Ka values.
The Ka value is found by looking at the equilibrium constant for the dissociation of the acid. The higher the Ka, the more the acid dissociates. Thus, strong acids must dissociate more in water. In contrast, a weak acid is less likely to ionize and release a hydrogen ion, thus resulting in a less acidic solution.
This equation makes it clear that the more the acid converts from its original form to its ionzied, dissociated form, the higher the Ka value will be.
The acid dissociation constant (Ka) is used to distinguish strong acids from weak acids. Strong acids have exceptionally high Ka values.
The Ka value is found by looking at the equilibrium constant for the dissociation of the acid. The higher the Ka, the more the acid dissociates. Thus, strong acids must dissociate more in water. In contrast, a weak acid is less likely to ionize and release a hydrogen ion, thus resulting in a less acidic solution.
This equation makes it clear that the more the acid converts from its original form to its ionzied, dissociated form, the higher the Ka value will be.
Compare your answer with the correct one above
Determine the equilibrium concentration of 
ions in a 
solution.
Determine the equilibrium concentration of
The definition of 
for 
is:
Set up an "ICE" table:
Plug in values:
Use the quadratic formula to solve:
The definition of
Set up an "ICE" table:
Plug in values:
Use the quadratic formula to solve:
Compare your answer with the correct one above
Determine the equilibrium concentration of 
ions in a 
solution.
Determine the equilibrium concentration of
Set up an "ICE" table
Plug in values:
Use the quadratic formula:
Set up an "ICE" table
Plug in values:
Use the quadratic formula:
Compare your answer with the correct one above
Which of the following is what determines the strength of an acid?
Which of the following is what determines the strength of an acid?
The Ka is the acid dissociation constant, and thus it is what determines how strong the acid is. Stronger acids dissociate to a greater extent and produce lower pH values.
The Ka is the acid dissociation constant, and thus it is what determines how strong the acid is. Stronger acids dissociate to a greater extent and produce lower pH values.
Compare your answer with the correct one above
What is the concentration of hydronium ions in a solution if the hydroxide ion concentration is ?
What is the concentration of hydronium ions in a solution if the hydroxide ion concentration is
For every acidic or basic solution, the product of the hydroxide ion concentration and the hydronium ion concentration will be equal to , the dissociation constant for water. In other words:
Since we are given the hydroxide ion concentration, we can determine the hydronium ion concentration using this equation.
For every acidic or basic solution, the product of the hydroxide ion concentration and the hydronium ion concentration will be equal to
Since we are given the hydroxide ion concentration, we can determine the hydronium ion concentration using this equation.
Compare your answer with the correct one above
A student has a 0.50M solution of acetic acid. She adds solid sodium acetate until the concentration of sodium acetate is 0.050M. What is the final pH of the solution?
The for acetic acid is . Assume the volume remains constant.
A student has a 0.50M solution of acetic acid. She adds solid sodium acetate until the concentration of sodium acetate is 0.050M. What is the final pH of the solution?
The
Acetic acid is a weak acid, and its dissociation reaction is written as:
Using an ICE table, we can find the pH of the solution when the sodium acetate is added:
I: There is initially a 0.50M concentration of acetic acid. Because sodium acetate will dissolve completely, there will be a 0.050M concentration of acetate ions in the solution.
C: As acetic acid dissociates, the concentrations of acetate ions and hydronium ions will increase by an unknown concentration . Conversely, the acetic acid concentration will decrease by the same amount.
E: By setting the equilibrium expression equal to the acid equilibrium constant, we can solve for the value of .
*Because the value for will be so much lower than the initial concentration, we can omit it from the acetate expression as well as the acetic acid concentration:
Keep in mind that is equal to the concentration of hydronium ions now in the solution.
Use this value in the equation for pH:
Acetic acid is a weak acid, and its dissociation reaction is written as:
Using an ICE table, we can find the pH of the solution when the sodium acetate is added:
I: There is initially a 0.50M concentration of acetic acid. Because sodium acetate will dissolve completely, there will be a 0.050M concentration of acetate ions in the solution.
C: As acetic acid dissociates, the concentrations of acetate ions and hydronium ions will increase by an unknown concentration
E: By setting the equilibrium expression equal to the acid equilibrium constant, we can solve for the value of
*Because the value for
Keep in mind that
Use this value in the equation for pH:
Compare your answer with the correct one above
What property distinguishes a strong acid from a weak acid?
What property distinguishes a strong acid from a weak acid?
The acid dissociation constant (Ka) is used to distinguish strong acids from weak acids. Strong acids have exceptionally high Ka values.
The Ka value is found by looking at the equilibrium constant for the dissociation of the acid. The higher the Ka, the more the acid dissociates. Thus, strong acids must dissociate more in water. In contrast, a weak acid is less likely to ionize and release a hydrogen ion, thus resulting in a less acidic solution.
This equation makes it clear that the more the acid converts from its original form to its ionzied, dissociated form, the higher the Ka value will be.
The acid dissociation constant (Ka) is used to distinguish strong acids from weak acids. Strong acids have exceptionally high Ka values.
The Ka value is found by looking at the equilibrium constant for the dissociation of the acid. The higher the Ka, the more the acid dissociates. Thus, strong acids must dissociate more in water. In contrast, a weak acid is less likely to ionize and release a hydrogen ion, thus resulting in a less acidic solution.
This equation makes it clear that the more the acid converts from its original form to its ionzied, dissociated form, the higher the Ka value will be.
Compare your answer with the correct one above
Determine the equilibrium concentration of ions in a solution.
Determine the equilibrium concentration of
The definition of for is:
Set up an "ICE" table:
Plug in values:
Use the quadratic formula to solve:
The definition of
Set up an "ICE" table:
Plug in values:
Use the quadratic formula to solve:
Compare your answer with the correct one above
Determine the equilibrium concentration of ions in a solution.
Determine the equilibrium concentration of
Set up an "ICE" table
Plug in values:
Use the quadratic formula:
Set up an "ICE" table
Plug in values:
Use the quadratic formula:
Compare your answer with the correct one above
Which of the following is what determines the strength of an acid?
Which of the following is what determines the strength of an acid?
The Ka is the acid dissociation constant, and thus it is what determines how strong the acid is. Stronger acids dissociate to a greater extent and produce lower pH values.
The Ka is the acid dissociation constant, and thus it is what determines how strong the acid is. Stronger acids dissociate to a greater extent and produce lower pH values.
Compare your answer with the correct one above
What is the concentration of hydronium ions in a solution if the hydroxide ion concentration is ?
What is the concentration of hydronium ions in a solution if the hydroxide ion concentration is
For every acidic or basic solution, the product of the hydroxide ion concentration and the hydronium ion concentration will be equal to , the dissociation constant for water. In other words:
Since we are given the hydroxide ion concentration, we can determine the hydronium ion concentration using this equation.
For every acidic or basic solution, the product of the hydroxide ion concentration and the hydronium ion concentration will be equal to
Since we are given the hydroxide ion concentration, we can determine the hydronium ion concentration using this equation.
Compare your answer with the correct one above
A student has a 0.50M solution of acetic acid. She adds solid sodium acetate until the concentration of sodium acetate is 0.050M. What is the final pH of the solution?
The for acetic acid is . Assume the volume remains constant.
A student has a 0.50M solution of acetic acid. She adds solid sodium acetate until the concentration of sodium acetate is 0.050M. What is the final pH of the solution?
The
Acetic acid is a weak acid, and its dissociation reaction is written as:
Using an ICE table, we can find the pH of the solution when the sodium acetate is added:
I: There is initially a 0.50M concentration of acetic acid. Because sodium acetate will dissolve completely, there will be a 0.050M concentration of acetate ions in the solution.
C: As acetic acid dissociates, the concentrations of acetate ions and hydronium ions will increase by an unknown concentration . Conversely, the acetic acid concentration will decrease by the same amount.
E: By setting the equilibrium expression equal to the acid equilibrium constant, we can solve for the value of .
*Because the value for will be so much lower than the initial concentration, we can omit it from the acetate expression as well as the acetic acid concentration:
Keep in mind that is equal to the concentration of hydronium ions now in the solution.
Use this value in the equation for pH:
Acetic acid is a weak acid, and its dissociation reaction is written as:
Using an ICE table, we can find the pH of the solution when the sodium acetate is added:
I: There is initially a 0.50M concentration of acetic acid. Because sodium acetate will dissolve completely, there will be a 0.050M concentration of acetate ions in the solution.
C: As acetic acid dissociates, the concentrations of acetate ions and hydronium ions will increase by an unknown concentration
E: By setting the equilibrium expression equal to the acid equilibrium constant, we can solve for the value of
*Because the value for
Keep in mind that
Use this value in the equation for pH:
Compare your answer with the correct one above
What property distinguishes a strong acid from a weak acid?
What property distinguishes a strong acid from a weak acid?
The acid dissociation constant (Ka) is used to distinguish strong acids from weak acids. Strong acids have exceptionally high Ka values.
The Ka value is found by looking at the equilibrium constant for the dissociation of the acid. The higher the Ka, the more the acid dissociates. Thus, strong acids must dissociate more in water. In contrast, a weak acid is less likely to ionize and release a hydrogen ion, thus resulting in a less acidic solution.
This equation makes it clear that the more the acid converts from its original form to its ionzied, dissociated form, the higher the Ka value will be.
The acid dissociation constant (Ka) is used to distinguish strong acids from weak acids. Strong acids have exceptionally high Ka values.
The Ka value is found by looking at the equilibrium constant for the dissociation of the acid. The higher the Ka, the more the acid dissociates. Thus, strong acids must dissociate more in water. In contrast, a weak acid is less likely to ionize and release a hydrogen ion, thus resulting in a less acidic solution.
This equation makes it clear that the more the acid converts from its original form to its ionzied, dissociated form, the higher the Ka value will be.
Compare your answer with the correct one above
Determine the equilibrium concentration of ions in a solution.
Determine the equilibrium concentration of
The definition of for is:
Set up an "ICE" table:
Plug in values:
Use the quadratic formula to solve:
The definition of
Set up an "ICE" table:
Plug in values:
Use the quadratic formula to solve:
Compare your answer with the correct one above
Determine the equilibrium concentration of ions in a solution.
Determine the equilibrium concentration of
Set up an "ICE" table
Plug in values:
Use the quadratic formula:
Set up an "ICE" table
Plug in values:
Use the quadratic formula:
Compare your answer with the correct one above
Which of the following is what determines the strength of an acid?
Which of the following is what determines the strength of an acid?
The Ka is the acid dissociation constant, and thus it is what determines how strong the acid is. Stronger acids dissociate to a greater extent and produce lower pH values.
The Ka is the acid dissociation constant, and thus it is what determines how strong the acid is. Stronger acids dissociate to a greater extent and produce lower pH values.
Compare your answer with the correct one above
What is the concentration of hydronium ions in a solution if the hydroxide ion concentration is ?
What is the concentration of hydronium ions in a solution if the hydroxide ion concentration is
For every acidic or basic solution, the product of the hydroxide ion concentration and the hydronium ion concentration will be equal to , the dissociation constant for water. In other words:
Since we are given the hydroxide ion concentration, we can determine the hydronium ion concentration using this equation.
For every acidic or basic solution, the product of the hydroxide ion concentration and the hydronium ion concentration will be equal to
Since we are given the hydroxide ion concentration, we can determine the hydronium ion concentration using this equation.
Compare your answer with the correct one above