We’re being asked to calculate the rate law based on the data given.
Experiment [Ce+4] [Fe2+] Initial Rate (M/s)
1 1.10 x10-5 1.80 x10-5 2.00 x10-7
2 1.10 x10-5 2.80 x10-5 3.10 x10-7
3 3.40 x10-5 2.80 x10-5 9.50 x10-7
Recall that the rate law only focuses on the reactant concentrations and has a general form of:
k = rate constant
A & B = reactants
x & y = reactant orders
We’re going to calculate the rate law and the rate constant using the following steps:
The initial rate for the oxidation of iron(II) by cerium(IV)
Ce4+ Fe2+ -------> Ce3+ Fe3+
Is measured at several different initial concentrations of the two reactants
Experiment [Ce+4] [Fe2+] Initial Rate (M/s)
1 1.10 x10-5 1.80 x10-5 2.00 x10-7
2 1.10 x10-5 2.80 x10-5 3.10 x10-7
3 3.40 x10-5 2.80 x10-5 9.50 x10-7
a) Write the rate law for this reaction.
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