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Topic: test revision help  (Read 3529 times)

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G-funk

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test revision help
« on: May 23, 2005, 11:59:03 PM »
hi there
i was wondering could someone please get an answer to the following questions and compare them with mine its just revision for a test but i need to make sure i am on the riht track i got a,c  repsectivily cheers


Consider an electrochemical cell where the following reaction takes place:
2Al(s) + 3Fe2+(aq) 2Al3+(aq)+ 3Fe(s)

Which of the following is the correct cell notation for this cell?

  a. Al | Fe2+ || Al3+ | Fe    
  b. Al | Al3+ || Fe2+ | Fe    
  c. Fe | Fe2+ || Al3+ | Al    
  d. Al3+ | Al|| Fe | Fe2+    

 

   By consulting Eo tables determine the cell potential at 25oC for a cell having the following reaction:
Zn(s) + Cu2+(aq)Zn2+(aq)+ Cu(s)

when [Cu2+] = 0.100 M and [Zn2+] = 1.00 M. Use R = 8.3145 kPa.L/mol.K and F = 96500C/mol

  a. -1.14 V    
  b. -0.42 V    
  c. +1.07 V    
  d. +1.10 V    

 

Offline xiankai

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Re:test revision help
« Reply #1 on: May 24, 2005, 07:45:23 AM »
im not sure about the 2nd question since i never learnt that topic, but i believe your answer to the first question is correct.
one learns best by teaching

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