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Topic: simple lab problem {Equilibrium, ICE Table}  (Read 2318 times)

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Offline moe82

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simple lab problem {Equilibrium, ICE Table}
« on: October 01, 2012, 10:45:17 PM »
Ok, so in lab i mixed
10 mL of .002 M KSCN
25 mL of 2.0 M HNO3
1.00 mL of .1M Fe(NO3)3

and was told to find the [SCN-] [Fe(NCS)2+] and [Fe3+]

Please explain

{MOD EDIT: add useful title}
« Last Edit: October 04, 2012, 10:07:36 AM by Arkcon »
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Offline Hunter2

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Re: simple lab problem
« Reply #1 on: October 02, 2012, 04:10:40 AM »
Not sufficient information. Complex constant is missing. Try to develop the chemical equation and the law of mass action.
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Offline Vidya

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Re: simple lab problem
« Reply #2 on: October 04, 2012, 08:16:40 AM »
Fe3+  + SCN-   ------> Fe(NCS)2+
make ice table
use kf value to know the conc of [SCN-] [Fe(NCS)2+] and [Fe3+]
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