A buffer solution contains dissolved C₆H₅NH₂ and C₆H₅NH₃Cl. The initial concentration of C₆H₅NH₂ is 0.50 M and the pH of the buffer is 4.20. Determine the concentration of C₆H₅NH₃⁺ in the solution. The value of Kb for C₆H₅NH₂ is 3.8 × 10⁻¹⁰. Also what is the original concentration of C₆H₅NH₃⁺ ?
A buffer solution contains dissolved C₆H₅NH₂ and C₆H₅NH₃Cl. The initial concentration of C₆H₅NH₂ is 0.50 M and the pH of the buffer is 4.20. Determine the concentration of C₆H₅NH₃⁺ in the solution. The value of Kb for C₆H₅NH₂ is 3.8 × 10⁻¹⁰. Also what is the original concentration of C₆H₅NH₃⁺ ?
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter12: Chemical Equilibrium
Section12.1: Characteristics Of Chemical Equilibrium
Problem 12.2CE
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Question
A buffer solution contains dissolved C₆H₅NH₂ and C₆H₅NH₃Cl. The initial concentration of C₆H₅NH₂ is 0.50 M and the pH of the buffer is 4.20. Determine the concentration of C₆H₅NH₃⁺ in the solution. The value of Kb for C₆H₅NH₂ is 3.8 × 10⁻¹⁰.
Also what is the original concentration of C₆H₅NH₃⁺ ?
![Based on your ICE table and definition of Kb, set up the expression for Kb in order to
determine the unknown. Do not combine or simplify terms.
Ko
= 3.8 x 1010
5 RESET
[0]
[0.50]
[x]
[2x]
[4.20]
[6.3 x 10°]
[1.6 x 10]
[3.8 х 10"]
[x + 4.20]
[x - 4.20]
[x + 6.3 x 10°]
[x - 6.3 x 10°]
[x + 1.6 x 10") (x - 1.6 × 10"] (x+ 3.8 × 10"]
[x - 3.8 x 10"]
II](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F960fa7b8-05f1-424a-a881-aef491912db8%2F62d59c75-642c-46ea-8457-56b43936c0aa%2Fcyqqrtj_processed.png&w=3840&q=75)
Transcribed Image Text:Based on your ICE table and definition of Kb, set up the expression for Kb in order to
determine the unknown. Do not combine or simplify terms.
Ko
= 3.8 x 1010
5 RESET
[0]
[0.50]
[x]
[2x]
[4.20]
[6.3 x 10°]
[1.6 x 10]
[3.8 х 10"]
[x + 4.20]
[x - 4.20]
[x + 6.3 x 10°]
[x - 6.3 x 10°]
[x + 1.6 x 10") (x - 1.6 × 10"] (x+ 3.8 × 10"]
[x - 3.8 x 10"]
II
![2
3
NEXT >
Let x represent the original concentration of C,H,NH, in the water. Based on the given
values, set up the ICE table in order to determine the unknown.
C,H̟NH,(aq) +
HO(1)
OH (aq)
+ C,H,NH, (aq)
Initial (M)
Change (M)
Equilibrium
(M)
5 RESET
0.50
4.20
-4.20
6.3 x 10*
-6.3 x 10*
1.6 x 1010
3.8 x 1010
-3.8 х 1010
x + 4.20
х- 4.20
x + 6.3 x 10
-1.6 x 1010
х-6.3 х 10*
x+ 1.6 x 1010
x - 1.6 x 1010
x+ 3.8 x 10 10
x - 3.8 x 1010](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F960fa7b8-05f1-424a-a881-aef491912db8%2F62d59c75-642c-46ea-8457-56b43936c0aa%2Fbn3vvma_processed.png&w=3840&q=75)
Transcribed Image Text:2
3
NEXT >
Let x represent the original concentration of C,H,NH, in the water. Based on the given
values, set up the ICE table in order to determine the unknown.
C,H̟NH,(aq) +
HO(1)
OH (aq)
+ C,H,NH, (aq)
Initial (M)
Change (M)
Equilibrium
(M)
5 RESET
0.50
4.20
-4.20
6.3 x 10*
-6.3 x 10*
1.6 x 1010
3.8 x 1010
-3.8 х 1010
x + 4.20
х- 4.20
x + 6.3 x 10
-1.6 x 1010
х-6.3 х 10*
x+ 1.6 x 1010
x - 1.6 x 1010
x+ 3.8 x 10 10
x - 3.8 x 1010
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