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Given: Cl(g)+H2(g)→HCl(g)+H(g) Temperature (K) Rate Constant (L/mol⋅s) 90 0.00357 100 0.0773 110 0.956 120 7.781 I...

Given: Cl(g)+H2(g)→HCl(g)+H(g)

Temperature (K) Rate Constant (L/mol⋅s)
90 0.00357
100 0.0773
110 0.956
120 7.781

I found the Ea = 23 kJ/mol, but need help on this one:

- Use an Arrhenius plot to determine the frequency factor for the reaction.

A = __ s-1

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Answer #1

K = A e -Ea/RT

Ea is given = 23 kj/mol

R = gas constant = 0.008314 kj/mol K

T = 90 K

R = rate constant = 0.00357 L/mol s

put all these values in the above equation

0.00357 = A e -23/0.008314 x 90

0.00357 = A e-30.74

0.00357 = A x 4.5 x 10-14

A = 7.98 x 1011 s-1

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