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F-7
ADVANCE STUDY ASSIGNMENT
1.
What is a distribution equilibrium?
2.
Consider the following reactions in an equilibrium system:
I
2(aq)
+ I
-
(aq)
I3
-
( aq)
(i)
I
2(aq)
I
2(CH2Cl2)
(ii)
Describe in words, how the concentrations of all the species in this system would be affected if some
I3
-
(aq)
is removed from the system. Give your answer in terms of the reaction quotients, equilibrium
constants, and positions of equilibria.
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
3.
Complete and balance the following equations:
S2O3 ²
-
(aq)
+ I
2(aq)
S2O3 ²
-
(aq)
+ I3
-
(aq)
4.
(a) What quantitative information is obtained by titrating the aqueous layer with
S2O3²
-
(aq)
?
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(b) What quantitative information is obtained by titrating the CH2Cl2 layer with S2O3²
-
(aq)
?
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______________________________________________________________________
5.
In a titration, 41.00 mL of 0.200 M thiosulfate solution was used to titrate 35.00 mL of iodine solution
in CH2Cl2. What is the molarity of the iodine solution?
Answer: 0.117 M
