8. O 0.96/1 points I Previous Answers Silber7 16.3.034 For the reaction 4 A(g) 3

Question

8. O 0.96/1 points I Previous Answers Silber7 16.3.034 For the reaction 4 A(g) 3 B(g) 2 C(g) the following data were obtained at constant temperature. Initial Rate Initial [A] Initial [B] (mol/L) (mol/L) Experiment (mol/L min) 0.100 0.100 5.00 0.100 0.300 45.0 0.200 10.0 0.100 0.200 0.300 90.0 (a) What is the order with respect to each reactant? with respect to [A] second order with respect to [B] first order (b) Select the rate law. 1/2 rate rate AMA) 1/2 rate KA] rate m KA][B rate KBP O rate KAPIB) (c) Calculate k (using the data from Expt 1), 500 Your response is off by a multiple of ten. L2/mol2.min

Explanation / Answer

we will calculate the value of k from the rate law

rate law is        rate = k [A]2 [B]

substituting the values of  rate, [A], [B] in the rate law

experiment 1: 5 (mol / L.min) = k (0.1 mol/L)2 (0.1 mol/L)   ==>    k = 5*103 L2/mol2.min

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