The pH for 6.1 × 10¬ª M solution of cocaine, a weak base, is 9.60. Determine the value of Kb for cocaine. 1 2 NEXT > 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) RESET 6.1 x 10-4 9.60 -9.60 2.5 x 10-10 -2.5 x 1010 4.0 × 10-5 -4.0 × 10-5 2.1 x 10-4 -2.1 x 10-4 5.7 x 10-4 -5.7 x 10-* ++ x+ 2.5 x 1010 x - 2.5 x 10*10 x + 4.0 x 10-s x - 4.0 × 10-5
The pH for 6.1 × 10¬ª M solution of cocaine, a weak base, is 9.60. Determine the value of Kb for cocaine. 1 2 NEXT > 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) RESET 6.1 x 10-4 9.60 -9.60 2.5 x 10-10 -2.5 x 1010 4.0 × 10-5 -4.0 × 10-5 2.1 x 10-4 -2.1 x 10-4 5.7 x 10-4 -5.7 x 10-* ++ x+ 2.5 x 1010 x - 2.5 x 10*10 x + 4.0 x 10-s x - 4.0 × 10-5
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Chapter16: Acid-base Equilibria
Section: Chapter Questions
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Question
Transcribed Image Text: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
NEXT
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(1I)
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 1010
4.0 x 10-5
-4.0 x 10-5
2.1 x 10-4
-2.1 x 10-4
5.7 x 10-4
-5.7 x 10-4
+x
x + 2.5 x 1010
-x
x - 2.5 x 1010
x + 4.0 x 10-5
x - 4.
10-5
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