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Weak Acids and Bases
Related Topics
Wize University Chemistry Textbook > Acids and Bases
Strength of Acids and Bases
3 Activities
Wize University Chemistry Textbook > Acids and Bases
Percent Dissociation
2 Activities
Which equation best describes the dissociation of hydrofluoric acid in water?
H
F
(
a
q
)
+
H
2
O
(
l
)
→
F
−
(
a
q
)
+
H
3
O
+
(
a
q
)
HF\ \left(aq\right)\ +\ H_2O\ \left(l\right)\ \ \rightarrow\ \ F^-\ \left(aq\right)\ +\ H_3O^+\ \left(aq\right)
H
F
(
a
q
)
+
H
2
O
(
l
)
→
F
−
(
a
q
)
+
H
3
O
+
(
a
q
)
H
F
(
a
q
)
+
H
2
O
(
l
)
⇌
F
−
(
a
q
)
+
H
3
O
+
(
a
q
)
HF\ \left(aq\right)\ +\ H_2O\ \left(l\right)\ \ \rightleftharpoons\ \ F^-\ \left(aq\right)\ +\ H_3O^+\ \left(aq\right)
H
F
(
a
q
)
+
H
2
O
(
l
)
⇌
F
−
(
a
q
)
+
H
3
O
+
(
a
q
)
H
F
(
a
q
)
+
H
2
O
(
l
)
⇌
H
2
F
+
(
a
q
)
+
O
H
−
(
a
q
)
HF\ \left(aq\right)\ +\ H_2O\ \left(l\right)\ \ \rightleftharpoons\ \ H_2F^+\ \left(aq\right)\ +\ OH^-\ \left(aq\right)
H
F
(
a
q
)
+
H
2
O
(
l
)
⇌
H
2
F
+
(
a
q
)
+
O
H
−
(
a
q
)
H
F
(
a
q
)
+
H
2
O
(
l
)
→
H
2
F
+
(
a
q
)
+
O
H
−
(
a
q
)
HF\ \left(aq\right)\ +\ H_2O\ \left(l\right)\ \ \rightarrow\ \ H_2F^+\ \left(aq\right)\ +\ OH^-\ \left(aq\right)
H
F
(
a
q
)
+
H
2
O
(
l
)
→
H
2
F
+
(
a
q
)
+
O
H
−
(
a
q
)
I don't know
Check Submission
More Strength of Acids and Bases Questions:
Acids and Bases: Acid Strength
Which one of the following statements about strong acids is true?
Acids and Bases: Weak Acids and Bases
Determine which of the following pairs is stronger.
a)
Stronger acid: HCN or NH
4
+
b)
Stronger base: SO
4
2-
or HPO
4
2-
?
Acids and Bases: Strong Acids and Bases
Practice Question: Strong Acids and Bases
Indicate which of the following are strong acids, strong bases, or neither.
Weak Acids and Bases
Which of the following pairs of acids/bases are stronger?
a)
Stronger acid: HF or HBr?
b)
Stronger acid: HF or HCN?
Weak Acids and Bases
Which equation best describes the dissociation of potassium hydroxide in water?
Weak Acids and Bases
Match the following terms with the correct definition
Strong Acids and Bases
Determine which of the species in the table below is a
strong acid
, which is a
strong base
, or which is
neither
.
Strong Acids and Bases
Determine which of the species in the table below is a
strong acid
, which is a
strong base
, or which is
neither
.
Which of the following is a strong acid?
HF H
2
SO
4
HCl CH
3
COOH NaOH Ca(OH)
2
Select the answer below that has the acids in the correct order from most to least acidic in the gas phase (no solvent leveling affect)
Acids and Bases: Acid strength
Which one of the following statements about strong acids is true?
More Percent Dissociation Questions:
In a 0.25 M solution, a weak acid is 3.0% dissociated. Calculate [H
3
O
+
], pH and pOH of the solution
In a 0.25 M solution, a weak acid is 3.0% dissociated. Calculate [H
3
O
+
], pH and pOH of the solution
Weak Acids and Bases
Calculate the percent dissociation for the following solutions.
a)
A 0.223 M aqueous solution of HF.
b)
A 1.70 x 10
-2
M aqueous solution of NaF.
Weak Acids and Bases
Calculate the percent dissociation for the following solutions.
a)
A 0.444 M aqueous solution of HCN (
K
a
= 6.2 x 10
-10
).
b)
A 3.50 x 10
-2
M aqueous solution of NaCN.
Acids and Bases: pH based on % dissociation
In a 0.25 M solution, a weak acid is 3.0% dissociated. Calculate [H
3
O
+
], pH and pOH of the solution
If an answer is an exponent such as 4.3x10
-7
, input the answer as: 4.3e-7
Le Chatelier's Principle: Percent dissociation
A solution made by dissolving 0.1 mol of acetic acid in 1.0 L of water is 4.1% dissociated. Which of the modifications below would cause the % dissociation of the acetic acid in the container to
increase
? (Ka for acetic acid is 1.8×10
-5
.)