NETICS AND EQIBRM Deducing a rate law from initial reaction rate data Some measu

Question

NETICS AND EQIBRM Deducing a rate law from initial reaction rate data Some measurements of the initial rate of a certain reaction are given in the table below N] [H,1 Initial rate of reaction 1.29 M 2.25 MM 3.98 M 2.25 MM 7.0 Ms 352. M/s 1.29 M 8.79 M 145, M this information to write a rate law for this reaction, and calculate the value of the rate constant k Round your value for the rate constant to 2 significant digits. Also be sure your answer has the corr ect unit symbol. rate = k Check Type here to search

Explanation / Answer

see experiment 1 and 2:
[N2] becomes 3 times
[H2] is constant
rate becomes 9 times
so, order of N2 is 2

see experiment 1 and 3:
[N2] is constant
[H2] becomes 4 times
rate becomes 4 times
so, order of H2 is 1

Rate law is:
rate = k*[N2]^2*[H2]

Put values from 1st row of table in rate law
rate = k*[N2]^2*[H2]
37 = k*1.29^2*2.25^1
k = 9.8819 M-2.s-1
Answer:
rate = k*[N2]^2*[H2]
K = 9.88 M-2.s-1

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