The rate constant of a reaction is 4.5010-5 L/mol·s at 195°C and 3.2010-3 L/mol·s at 258°C. What is the activation energy of the reaction?

Question

Nina

Chemistry

2 December, 13:25

The rate constant of a reaction is 4.5010-5 L/mol·s at 195°C and 3.2010-3 L/mol·s at 258°C. What is the activation energy of the reaction?

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Answers (1)

Know the Answer?

Spencer Reed · Answer 1

138.46KJ

Explanation:

In (k1/k2) = Ea/Rx (1/T1-1/T2)

T1 = 195+273 = 468k

T1 = 195 + 273 = 531k

K1 = 4.5 X 10-5

K2=3.2x10-3

Rx = 8.3145

In (71.111) = Ea/8.3145 (1/468 - 1/531)

4.26409x 8.3145 = Ea (0.000256)

Ea=138464.1

=138.46kJ

The rate constant of a reaction is 4.50*10-5 L/mol·s at 195°C and 3.20*10-3 L/mol·s at 258°C. What is the activation energy of the reaction?

The rate constant of a reaction is 4.5010-5 L/mol·s at 195°C and 3.2010-3 L/mol·s at 258°C. What is the activation energy of the reaction?