High School
SAT
SAT Elite 1500
SAT Tutoring
ACT
ACT Elite 33
ACT Tutoring
University
MCAT
MCAT Elite 515
Med-School Admissions
Pre-Med Tutoring
Pre-Med Plus
LSAT
LSAT Elite 170
LSAT Self-Paced
LSAT Tutoring
DAT
DAT Elite
DAT Tutoring
Log in
Get Started for Free
An aqueous solution only contains a 0.050 M in a weak base. Which of the follo…
Related Topics
Wize University Chemistry Textbook > Acids and Bases
Base Equations (Kb, pKb)
1 Activity
An aqueous solution only contains a 0.050 M in a weak base. Which of the following statements would be true about the solution?
[H
3
O
+
] = 0.050 M
[OH
-
] = 0.050 M
pH < 7
7 < pH < 12.5
we would have to know the Kb to make any conclusion.
I don't know
Check Submission
More Base Equations (Kb, pKb) Questions:
Acids and Bases: Base equations
CH
3
NH
3
is a weak base. When mixed with water, we see the following reaction:
CH
3
NH
3
+ H
2
O <----> CH
3
NH
4
+
+ OH
-
Once the reaction reaches equilibrium, K
b
was found to be 1.07 x 10
-3
. If the reaction at equilibrium contains 2.5 M CH
3
NH
3
and 0.37 M CH
3
NH
4
+
, how much OH
-
is in solution?
Consider the following reaction in water:
NaOH <----> Na
+
+ OH
-
This reaction has a Kb of 1 x 10
-10
and a pOH of 3. If there is 1 M of NaOH at equilibrium, what is the concentration of Na
+
in solution?
Consider the weak bases below and their K
b
values:
C
6
H
7
O
K
b
=
1.3
×
10
−
10
C_6H_7O \hspace{48pt}K_b=1.3 \times 10^{-10}
C
6
H
7
O
K
b
=
1.3
×
1
0
−
10
C
2
H
5
N
H
2
K
b
=
5.6
×
10
−
4
C_2H_5NH_2 \hspace{30pt}K_b=5.6 \times 10^{-4}
C
2
H
5
N
H
2
K
b
=
5.6
×
1
0
−
4
Ammonia(NH
3
) is a weak base, K
b
= 1.8 x 10
-5
and benzoic acid (C
6
H
5
CH
2
O
-
) is a weak acid, K
a
= 6.3 x 10
-5
. A solution of ammonium benzoate (NH
4
)(C
6
H
5
CH
2
O
-
) is:
To 150 mL of water was added 0.18 moles of ammonia (NH
3
K
b
= 2.3 x 10
-5
) calculate the pH.
Triemethylamine (N(CH
3
)
3
) is a base (pKb=4.19) used in a variety of organic reactions. It can also be used as an effective Lewis base due to it's small steric profile.
if a solution of [N(CH
3
)
3
H]
2
[SO
4
]is dissolved in neutral water the pH will be,
Strength of Acids and Bases
What is the strongest acid below? What is the weakest acid?
Strongest acid:
Cl
3
CCOOH
Weakest acid:
HCN
Acids and Bases: Base Equations
Consider the weak bases below and their K
b
values:
C
6
H
7
O
K
b
=
1.3
×
10
−
10
C
2
H
5
N
H
2
K
b
=
5.6
×
10
−
4
C
5
H
5
N
K
b
=
1.7
×
10
−
9
\begin{alignedat}{} &C_6H_7O &&K_b = 1.3\times10^{-10}\\ &C_2H_5NH_2 &&K_b = 5.6\times10^{-4}\\ &C_5H_5N &&K_b = 1.7\times10^{-9} \end{alignedat}
C
6
H
7
O
C
2
H
5
N
H
2
C
5
H
5
N
K
b
=
1.3
×
1
0
−
10
K
b
=
5.6
×
1
0
−
4
K
b
=
1.7
×
1
0
−
9
Arrange the conjugate acids of these weak bases in order of
increasing
acid strength.