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Question 4.30 in the organic chem book

Posted: Fri Mar 10, 2017 12:40 am
by Divya Kumar 3I
Question 4.30 asks if a reaction can occur at room temperature if the known activation energy is 125 kJ/mol. Apparently, the answer is no, can someone explain why?

Re: Question 4.30 in the organic chem book

Posted: Fri Mar 10, 2017 1:12 am
by Andrew M 2J
We use the Arrhenius equation and if we plug in 125 kj/mol into the equation, we end up with a very small value next to "A"
Arrhenius equation: k= A*(e^(-Ea/RT). Thus, when 125 is plugged in, it becomes k= A*(very small number), and thus, we can assume that k will be very small and since k is the rate constant, rate constant is very, very small at room temperature. Thus, reaction doesn't occur.

Re: Question 4.30 in the organic chem book

Posted: Sun Mar 12, 2017 7:01 pm
by Samuel_Vydro_1I
Yeah it could theoretically occur but it is just asking you to infer the most likely scenario