Manipulating the Data
rate 2 k[O2]2m[NO]2n
rate 1 k[O2]1m[NO]1n
rate 2 [O2]2m
rate 1 [O2]1m
=
=
=
([O2]2 / [O1]1)m
6.40 x 10-3 mol/L/s
3.21 x 10-3 mol/L/s
(2.20 x 10-2 mol/L/ 1.10 x 10-2 mol/L)m
=
1.99 = (2.00)m
m = 1
Thus, the reaction is first order with respect to O2.
When [O2] doubles, the rate doubles.
([NO] is held constant)
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