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Post by rajiv94 on Nov 28, 2015 14:05:49 GMT
For this question shown below, I'm not sure if to use the equation as is, or ln both sides of the equation in the question below:
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sarah
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Post by sarah on Nov 28, 2015 20:11:23 GMT
You don't have ln both sides
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sarah
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Post by sarah on Nov 28, 2015 20:11:33 GMT
Have to*
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sarah
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Post by sarah on Nov 28, 2015 20:11:48 GMT
Don't have to* ?
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sarah
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Post by sarah on Nov 28, 2015 20:12:08 GMT
Sorry about the emoji
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Post by rajiv94 on Nov 28, 2015 20:30:53 GMT
oh okay thanks, but when would we have to ln both sides?
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sarah
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Post by sarah on Nov 28, 2015 21:43:47 GMT
I think you use that when you have to find the activation energy and the frequency factor
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Post by rajiv94 on Nov 28, 2015 22:07:36 GMT
alright thank again, one last thing, for the same question how is part b done? is it another calc question or it just needs to be explained?
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sarah
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Post by sarah on Nov 28, 2015 23:28:00 GMT
You mean part (ii) ?
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sarah
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Post by sarah on Nov 28, 2015 23:30:34 GMT
Or deducing the order thing?
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Post by rajiv94 on Nov 29, 2015 13:10:56 GMT
part ii
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sarah
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Post by sarah on Nov 29, 2015 14:01:09 GMT
It said calculate so I guess its a calculation
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sarah
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Post by sarah on Nov 29, 2015 18:41:34 GMT
Btw did you do #7?
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Post by Admin on Dec 1, 2015 20:23:46 GMT
For this question shown below, I'm not sure if to use the equation as is, or ln both sides of the equation in the question below: View AttachmentHi, For using any equation, you need to determine what information is provided and what you need to calculate. For that question, it is clear you have to calculate the rate constant, k. the values of A, Ea and T are provided and you can look up the value of R. There is no need to find the natural logs (ln) For most cases you only need to use the integrated equation ln k = -Ea/RT + ln A, when you have to plot a graph from a series of values (data) of rate constant (k) and temperature (T) to find both Ea and A.
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