December 11, 2019, 12:40:24 PM
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Topic: Determining the mass of elements in a coin.  (Read 132 times)

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Offline Mati

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Determining the mass of elements in a coin.
« on: November 28, 2019, 03:01:48 PM »
In my chemistry class we are starting some projects and I have come across an issue, I'm not sure how I could determine the mass of nickel or iron in the coin (10 pence).

I can easily find the mass of manganese by colorimetry but when it comes to the other elements (mainly iron and nickel) I can't seem to find a method to successfully determine their mass.

At first I thought I found a solution for nickel, I found that I could use DMG as it forms a colored complex with nickel(II) and I could use citric acid to prevent the DMG from forming a complex with the iron, however from what I read this has to be done in an ammonia solution and since I would be likely dissolve the coin in nitric acid would this produce products that will prevent this reaction or interfere? and would a titration with DMG even be viable for my aim?
Would a gravimetric analysis be better to do for the mass of nickel with DMG?

Online chenbeier

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Re: Determining the mass of elements in a coin.
« Reply #1 on: November 28, 2019, 03:13:29 PM »
For every element analytical methods available.

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