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Topic: [Fe3+] Equilibrium  (Read 2757 times)

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Offline IDudeScience

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[Fe3+] Equilibrium
« on: March 28, 2010, 03:52:06 PM »
I am using this formula to find the equilibrium conc of Fe3+

[Fe3+]eq = [Fe3+]Initial - [FeSCN2+]eq

Now my question is, for the initial Fe conc, do I use the concentration that is stated on the bottle? (Bottle that the Fe came from which was 0.150M) Or should I multiply that concentration by the amount used (5ML) and then divide by total volume of solution 25ml (5ml fe, 10ml scn and 10 ml HNO3)

Offline Borek

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Re: [Fe3+] Equilibrium
« Reply #1 on: March 28, 2010, 03:59:27 PM »
Second case.
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Offline IDudeScience

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Re: [Fe3+] Equilibrium
« Reply #2 on: March 28, 2010, 04:13:52 PM »
So even tho HNO3 is added to prevent a precipitate from forming the total still include its?

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