Rates of Chemical Reactions Course Team members 1. Given the following data, det

Question

Rates of Chemical Reactions Course Team members 1. Given the following data, determine the orders with respect to the oncentrations of substances A and B in the reaction A +Bproducts Time for reaction A 0.10 M 0.20M 0.10 M 0.10 M 0.10 M 262s 87 s 66 a 0.20M 0.20M 0.10 M 0.20 M 131 2. What must be the units of the specifße rate constant in Prelaboratory Question 1, piven that the rate of reaction would be measured in Mis? Why is it not possible to prediet the form of the rate law for a reaction from a knowledge of the overall stoichiometry of a reaction? 3. 145

Explanation / Answer

2. Depending upon the order of reaction, the specific rate constant is

Zero-order reaction, Rate=k[A]0

M/t=k, where k=M/s

First order reaction, Rate=k[A]

M/t=kM where k=s-1

Second order reaction, Rate=k[A][B]

M/t=kM2 where k=M-1s-1

Third order reaction, Rate=k[A][B][C]

M/t=kM3 where k=M-2s-1

  n order reaction,Rate=k[A]n They are not in general

M/t=kMn where k=M-(n-1)s-1

3.the exponents X and Y are the partial reaction order and must be determined experimentally.They are not in general equal to stoichiometric coefficients.

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