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Chemistry Forums for Students => Analytical Chemistry Forum => Topic started by: ryantyler on January 20, 2020, 02:47:23 AM

Title: Determination of metal concentration as a university project!!
Post by: ryantyler on January 20, 2020, 02:47:23 AM

As a part of a university course in analitical chem I was given a solution of MnSO4 and Co(NO3)2 and was asked to determain thier concentration , I tried oxidising the Mn+2 to MnO4 using H3PO4 and KIO4 , it worked , but then I tried to run a sepctroscopy test of the solution I got 3 peaks, which doesn't make alot of sence....

Dose any one know what could have happened ?

And I'd love to hear if you have any more ideas!

I thought about EDTA titration but I have no idea what range of pH to use , the book I'm using isn't that comprehansable

Title: Re: Determination of metal concentration as a university project!!
Post by: shchavel on January 24, 2020, 12:14:55 PM

Hello! Your problem has many solutions. The best solution for you depends up on list of reagents you have.
Find some precipitating that work with Mn, but not work with Co. Or contrawise. Do this precipitaion, collect, and dry precipitate. Mesure the mass. Calculate the concetratio. Ta da!