The pH for 6.1 × 10-4 M solution of cocaine, a weak base, is 9.60. Determine the value of Kb for cocaine. 1 2 Let cocaine be represented by the generic base, B. Based on the given values, fill in the ICE table to determine concentrations of all reactants and products. B(aq) + H20(1) = OH-(aq) + BH*(aq) Initial (M) Change (M) Equilibrium (M)

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Chapter9: Acids, Bases, And Salts
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8:50 1
| 5G E
Question 12 of 25
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The pH for 6.1 x 10-4 M solution of cocaine, a
weak base, is 9.60. Determine the value of Kb
for cocaine.
1
2
Let cocaine be represented by the generic
base, B. Based on the given values, fill in the
ICE table to determine concentrations of all
reactants and products.
B(aq) + H2O (1) = OH (aq) + BH*(aq)
Initial (M)
Change (M)
Equilibrium
(M)
5 RESET
6.1 x 10-4
9.60
-9.60
2.5 x 10-10
-2.5 x 10-10
4.0 × 10-5
-4.0 x 10-5
2.1 × 10-4
-2.1 x 10-4
5.7 x 10-4
-5.7 x 10-4
+x
-X
x + 2.5 x 10-10
х - 2.5 х 10-10
x + 4.0 × 10-5
x - 4.0 x 10-5
Transcribed Image Text:8:50 1 | 5G E Question 12 of 25 Submit The pH for 6.1 x 10-4 M solution of cocaine, a weak base, is 9.60. Determine the value of Kb for cocaine. 1 2 Let cocaine be represented by the generic base, B. Based on the given values, fill in the ICE table to determine concentrations of all reactants and products. B(aq) + H2O (1) = OH (aq) + BH*(aq) Initial (M) Change (M) Equilibrium (M) 5 RESET 6.1 x 10-4 9.60 -9.60 2.5 x 10-10 -2.5 x 10-10 4.0 × 10-5 -4.0 x 10-5 2.1 × 10-4 -2.1 x 10-4 5.7 x 10-4 -5.7 x 10-4 +x -X x + 2.5 x 10-10 х - 2.5 х 10-10 x + 4.0 × 10-5 x - 4.0 x 10-5
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