Problem 15.61

Arrhenius Equation:

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Amy Zheng 2l
Posts: 57
Joined: Fri Sep 29, 2017 7:04 am

Problem 15.61

Postby Amy Zheng 2l » Sun Mar 11, 2018 11:31 pm

Where did the solution manual get the equation ln(k'/k)=Ea/r(1/T-1/T') from?

Sabah Islam 1G
Posts: 50
Joined: Sat Jul 22, 2017 3:01 am

Re: Problem 15.61

Postby Sabah Islam 1G » Mon Mar 12, 2018 12:22 am

I believe this equation was derived from the equation on the constants and equations sheet: k=A exp(-Ea/RT), where ln(k'/k) was used because of the reaction being first order and T being extracted from (-Ea/RT) to become Ea/r(1/T - 1/T'). I'm not entirely sure about this, but I hope this helps.

Christy Lee 2H
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Joined: Fri Sep 29, 2017 7:07 am
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Re: Problem 15.61

Postby Christy Lee 2H » Mon Mar 12, 2018 2:04 pm

Do you know where A went though?

Katie Blann 1E
Posts: 29
Joined: Tue Nov 15, 2016 3:00 am

Re: Problem 15.61

Postby Katie Blann 1E » Mon Mar 12, 2018 6:47 pm

I am also confused about where this equation came from can anyone elaborate on this more?

Paula Dowdell 1F
Posts: 72
Joined: Tue Nov 15, 2016 3:00 am

Re: Problem 15.61

Postby Paula Dowdell 1F » Mon Mar 12, 2018 10:10 pm

Does anyone know why they used kilojoules in this problem? When i use regular joules (R= 8.314 J/Kxmol) I get a completely different answer.

Seth_Evasco1L
Posts: 54
Joined: Thu Jul 27, 2017 3:00 am

Re: Problem 15.61

Postby Seth_Evasco1L » Tue Mar 13, 2018 12:51 am

I calculated using joules and had my answer off by a factor of 103 which is reasonable because converting to kilojoules would provide me with the same answer as the solution manual. Perhaps there was some miscalculation in the process?


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