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Topic: ** Titration Practical exam **  (Read 4131 times)

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miyachin

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** Titration Practical exam **
« on: May 10, 2006, 02:27:19 PM »
My as practical exam is on the 18th and I also need to do heating as well.
The aim is to determine how many moles of water H2O in hydrated sodium carbonate (Na2CO3 .XH2O)
So anyone got any idea or comments that would help me? >< ::)
Thx
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Offline Albert

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Re: ** Titration Practical exam **
« Reply #1 on: May 10, 2006, 02:59:07 PM »
First of all, you must weight your sample of hydrated sodium carbonate.
Then you titrate it using KFA (or another primary or secondary standard): this will tell you the moles of sodium carbonate you have.
You'll have to multiply them by the molecular weight of Na2CO3 plus a progressive number of water molecules, untill you get the closest weight to the one you calculated in the beginning.
« Last Edit: May 10, 2006, 03:09:58 PM by Albert »
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Offline Alberto_Kravina

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Re: ** Titration Practical exam **
« Reply #2 on: May 11, 2006, 07:41:14 AM »
We've had a similar discussion about one week ago :P

http://www.chemicalforums.com/index.php?topic=8370.0

Maybe this could help (I hope so) :)
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