Question

C2H6(g) + Cl → C2H5 (9) + HCl(g) In this reaction the indicates a radical that is consumed or produced. The kinetics of this reaction was studied at various temperatures and yielded the listed below. Based upon your analysis of this data, determine, Ea, A, AH+, and Ast. Include all supporting information to show how these were determined. What references did you use to assist you in answering this problem? T(K) 270 370 470 570 670 k(M-25-1) 3.43x10-10 3.77x10-10 3.99x10-10 4.13x10-10 4.23x10-10

Answer 1

The data of ln K versus 1 / T are plotted:

We have the equation of the line:

Y = - 95,163 * X - 21,441

Is calculated:

Ea = - m * R = - (-95,163) * 0.008314 kJ / mol = 0.79 kJ / mol

A = exp (b) = exp (-21,441) = 4.88E-10

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