A buffer solution contains dissolved C6H5NH2 and C6H5NH3CI. 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. 2 3 NEXT > Let x represent the original concentration of C6H;NH3* in the water. Based on the given values, set up the ICE table in order to determine the unknown. C6H5NH2(aq) + H2O(1) OH (aq) + C6H5NH3*(aq) Initial (M) 0.50 Change (M) Equilibrium |(M) -1.6 x 10-10 II

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A buffer solution contains dissolved C6H5NH2 and
C6H5NH3CI. The initial concentration of C6H5NH2 is 0.50
M and the pH of the buffer is 4.20. Determine the
concentration of C6H;NH3* in the solution. The value of
Kb for C6H5NH2 is 3.8 x 10-10.
1
2
NEXT >
Let x represent the original concentration of C6H5NH3* in the water. Based on the given
values, set up the ICE table in order to determine the unknown.
C6H;NH2(aq) +
H20(1)
ОН (ад)
+ CgH;NH;*(aq)
Initial (M)
0.50
Change (M)
Equilibrium
(M)
-1.6 x 10 10
Incorrect, 2 attempts remaining
Your Initial concentration for C,H5NH3* is incorrect. Revisit the problem statement to determine the initial concentration of acid
or base. Also, make sure that your values are in the correct concentration units, not mass or moles!
Your Change in concentration for C6H5NH2 is incorrect. In this problem, you should use the given pH to determine the
concentration of H3O* or OH at Equilibrium as appropriate. From there, you should be able to determine the Change of each
species, which is the difference between the Equilibrium and Initial concentration. Recall that pH = -log([H3O*]) and that
[H;O*][OH¯] = 1 × 10-14
%3D
Your Change in concentration for OH" is incorrect. In this problem, you should use the given pH to determine the
concentration of H30* or OH at Equilibrium as appropriate. From there, you should be able to determine the Change of each
species, which is the difference between the Equilibrium and Initial concentration. Recall that pH = -log([H3oʻ) and that
[H;O*][OH] = 1 × 10-14
Transcribed Image Text:Question 6 of 36 Retry A buffer solution contains dissolved C6H5NH2 and C6H5NH3CI. The initial concentration of C6H5NH2 is 0.50 M and the pH of the buffer is 4.20. Determine the concentration of C6H;NH3* in the solution. The value of Kb for C6H5NH2 is 3.8 x 10-10. 1 2 NEXT > Let x represent the original concentration of C6H5NH3* in the water. Based on the given values, set up the ICE table in order to determine the unknown. C6H;NH2(aq) + H20(1) ОН (ад) + CgH;NH;*(aq) Initial (M) 0.50 Change (M) Equilibrium (M) -1.6 x 10 10 Incorrect, 2 attempts remaining Your Initial concentration for C,H5NH3* is incorrect. Revisit the problem statement to determine the initial concentration of acid or base. Also, make sure that your values are in the correct concentration units, not mass or moles! Your Change in concentration for C6H5NH2 is incorrect. In this problem, you should use the given pH to determine the concentration of H3O* or OH at Equilibrium as appropriate. From there, you should be able to determine the Change of each species, which is the difference between the Equilibrium and Initial concentration. Recall that pH = -log([H3O*]) and that [H;O*][OH¯] = 1 × 10-14 %3D Your Change in concentration for OH" is incorrect. In this problem, you should use the given pH to determine the concentration of H30* or OH at Equilibrium as appropriate. From there, you should be able to determine the Change of each species, which is the difference between the Equilibrium and Initial concentration. Recall that pH = -log([H3oʻ) and that [H;O*][OH] = 1 × 10-14
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