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S-15
REPORT: EXPERIMENT S - REACTION RATES
Name ____________________________________
Section ___________ Date ___________________
Laboratory Instructor________________________
1.
Complete Table II on page S-16 by doing the following calculations for each reaction run.
Include all your calculations and stoichiometric relations in the spaces on the Table or on a
separate sheet. (3.0 marks)
a.
Calculate the concentrations of KI, of (NH
4
)2S2O
8
, and of Na2S2O3 at the point of mixing.
b.
Calculate [I2] formed in
t(s), and therefore the reaction rate,
[I2]/
t.
c.
Determine the rate law by completing questions #2a to 2d below.
d.
Go back to Table II and calculate values of the rate constant, “k”.
2.
Calculation of Reaction Order:
a.
Determine the order of reaction with respect to S2O
8
2-
. Show at least two
detailed
mathematical calculations using your data. (0.5 marks)
