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Problem 15.61

Posted: Sun Mar 11, 2018 11:31 pm
by Amy Zheng 2l
Where did the solution manual get the equation ln(k'/k)=Ea/r(1/T-1/T') from?

Re: Problem 15.61

Posted: Mon Mar 12, 2018 12:22 am
by Sabah Islam 1G
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.

Re: Problem 15.61

Posted: Mon Mar 12, 2018 2:04 pm
by Christy Lee 2H
Do you know where A went though?

Re: Problem 15.61

Posted: Mon Mar 12, 2018 6:47 pm
by Katie Blann 1E
I am also confused about where this equation came from can anyone elaborate on this more?

Re: Problem 15.61

Posted: Mon Mar 12, 2018 10:10 pm
by Paula Dowdell 1F
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.

Re: Problem 15.61

Posted: Tue Mar 13, 2018 12:51 am
by Seth_Evasco1L
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?