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Author Topic: Chemistry : Paper 5 (AS/A2), CIE  (Read 898 times)

Offline Nasir69

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Chemistry : Paper 5 (AS/A2), CIE
« on: May 30, 2010, 09:45:08 am »
I have doubt in Chemistry Paper, the details of the paper are given below, please anyone help me if you can....Thank you

9701/05/O/N/O8

Page 10, Question 2(e)
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Offline osmosis

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Re: Chemistry : Paper 5 (AS/A2), CIE
« Reply #1 on: May 30, 2010, 09:57:12 am »
from what I get....
the gradient of my graph is
m= 1.93-0.48/5760-1440
  = 0.000335648

Faraday constant= Q(C) / n(mol)
                       = Q/ [2x(m/63.5)]
      2F/63.5 x m = Q
                   m = 63.5Q/2F


Y= MX + C
   
therefore, m= 63.5/2F
0.000335645=63.5/2F
F= 94594
 = 9.5x10^5

i hope you understand....^_^
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Offline osmosis

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Re: Chemistry : Paper 5 (AS/A2), CIE
« Reply #2 on: May 30, 2010, 10:04:06 am »
9.5x10^4 Cmol^-1  :)
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Offline hira

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Re: Chemistry : Paper 5 (AS/A2), CIE
« Reply #3 on: May 30, 2010, 02:34:13 pm »
Please help me with this question...

M/J 08 Q2  F

how are we suppose to draw contruction lines on the graph to drive values.

PLEASE HELPPPPPPPPPPPP...REPLY FASTTT!
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Offline hira

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Re: Chemistry : Paper 5 (AS/A2), CIE
« Reply #4 on: May 30, 2010, 02:46:11 pm »
please reply fast
i have my exam tom  :'( :'( :'( :'(
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Offline hira

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Re: Chemistry : Paper 5 (AS/A2), CIE
« Reply #5 on: May 30, 2010, 02:58:52 pm »
no body online to help? :(
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Offline hira

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Re: Chemistry : Paper 5 (AS/A2), CIE
« Reply #6 on: May 30, 2010, 03:36:53 pm »
i really dont want to spam
but i am waiting for a reply :(
please help!
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