Reaction of nitrogen monoxide and hydrogen A student collects the data below for the reaction:   2 NO(g) + 2 H2(g) → N2(g) + 2 H2O(g)   Trial [NO]i [H2]i Initial Rate (M/s) 1 0.050 M 0.050 M 0.0917 2 0.10 M 0.050 M 0.367 3 0.10 M 0.10 M 0.734 Determine the rate law for the reaction. multiple choice  1.Rate = k[NO][H2] 2.Rate = k[NO]4[H2]2 3.Rate = k[NO]2[H2]2 4.Rate = k[NO]2[H2] 5.The rate law cannot be determined from the given information.

Chemistry for Engineering Students
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Chapter11: Chemical Kinetics
Section: Chapter Questions
Problem 11.98PAE: Experiments show that the reaction of nitrogen dioxide with fluorine, 2 NO2(g) + F2(g) —* 2 FNO2(g)...
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Reaction of nitrogen monoxide and hydrogen

A student collects the data below for the reaction:

 

2 NO(g) + 2 H2(g) → N2(g) + 2 H2O(g)

 

Trial [NO]i [H2]i Initial Rate (M/s)
1 0.050 M 0.050 M 0.0917
2 0.10 M 0.050 M 0.367
3 0.10 M 0.10 M 0.734

Determine the rate law for the reaction.

multiple choice 

1.Rate = k[NO][H2]
2.Rate = k[NO]4[H2]2
3.Rate = k[NO]2[H2]2
4.Rate = k[NO]2[H2]
5.The rate law cannot be determined from the given information.
Expert Solution
Step 1

If we look at the trial 1 and 2, the concentration of A is doubled and B remains same. So, on doubling the concentration of A, the rate becomes 4 times of the initial rate. That is 0.0917 becomes 4×0.0917 = 0.367.

Hence the order of reaction with respect to A is 2. 

Step 2

If we look at the trial 2 and 3, the concentration of B is doubled and A remains same. So, on doubling the concentration of B, the rate becomes 2 times of the initial rate. That is 0.367 becomes 2×0.367 = 0.734.

Hence the order of the reacton with respect to B is 1. 

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