1.

A first order reaction is 50% completed in 20 minutes at \[27{}^\circ C\] and in 5 minutes at\[47{}^\circ C\]. The energy of activation of the reaction is:

A. 43.85 kJ/mol                 
B. 55.14 kJ/mol
C. 11.97 kJ/mol                 
D. 6.65 kJ/mol
Answer» C. 11.97 kJ/mol                 


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