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admin
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Joined: 08 Dec 2003
Posts: 2168
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 Posted: Tue May 08, 2007 1:20 pm Post subject: |
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Just above the line that you quoted in your question, on the left hand side of the equation, because the [Mg] was 0.1 M, you had:
0.1 [F]^2 = blah blah
So to isolate [F]^2, you would have to multiply both sides by 10. |
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wesley.pau5578
Joined: 06 Jun 2010
Posts: 5
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| Posted: Wed Jun 23, 2010 12:12 pm Post subject: NEW QUESTION for Questions 33 and 34 |
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| So, I have looked at the question and answer in the discussion for Question 33 that explains why the concentration of F- is denoted [2F-] (which is then squared, becoming 4F-^2. However, I don't really understand why we let the concentration of F- be [2F-] for Question 33, and just [F-] for Question 34. |
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jellywing_2058
Joined: 04 May 2009
Posts: 177
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| Posted: Wed Jun 30, 2010 2:20 pm Post subject: |
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| In this case the 2 would be implicit within the concentration so you are actually looking for F- only which would also be [2F-] = x and so you do not consider the 2 in this calculation. However the above explanation IS CORRECT. |
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wesley.pau5578
Joined: 06 Jun 2010
Posts: 5
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| Posted: Tue Jul 13, 2010 5:47 pm Post subject: |
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| word. |
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drgshahbaz1193
Joined: 26 Mar 2010
Posts: 17
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| Posted: Tue Jan 18, 2011 5:08 pm Post subject: |
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| Hey could someone please tell me how to calculate concentration using Ksp. I am really confused because sometimes we have to double the value of the one of the products and sometimes we dont and I dont see the distinction. Help. |
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