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⁺ ?

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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
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
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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