I am carrying out an investigation onthe purity of iron tablets. Could some-one please provide me with some information on how I would actually extract the iron from the tablet. I know i would have to titrate it with potassium manganate and use colorimetry but i am stuck on writing the method for how to extract the iron form the tablet. I would really appreciate any help.

 

Thanks

I am carrying out an investigation onthe purity of iron tablets. Could some-one please provide me with some information on how I would actually extract the iron from the tablet. I know i would have to titrate it with potassium manganate and use colorimetry but i am stuck on writing the method for how to extract the iron form the tablet. I would really appreciate any help.

 

Thanks

There might be a way to do it with magnets.

i have to extract the iron form the tablet (which is what im stuck on) and then titrate it with potassium manganate and then use colorimetry

without knowing exactly what form the iron is presented, it`s impossible to give a single answer, is it the Sulphate, EDTA, Gluconate etc... ?

it is present as iron II suplhate

You probably want to keep it as sulphate because that isn't likely to interfere with the titration etc.

You need to dissolve it in something- water is cheap and will dissolve the iron(II) sulphate but you don't need to use pure water if you think adding something to it would help.

Iron (II) salts tend to oxidise in air. They do this slowly in acid conditions but quickly in alkaline conditions.

 

Any thoughts?