[DuncanWilson]

Hi there.

Supposing I had a sample containing a mixture of approximately 2 g of NaNO₃ and Ca(NO₃)₂·4H₂O, what experimental methods could I use to determine the weight of the two components present in the sample? I believe I could use EDTA to complex the Ca²⁺ ion. What else could I do?

Thank you.

Duncan.

[billnotgatez]

Have you thought about the various properties of the chemicals that might allow for separation.
http://www.eschooltoday.com/science/elements-mixtures-compounds/separation-of-mixtures.html

[DuncanWilson]

Have you thought about the various properties of the chemicals that might allow for separation.
http://www.eschooltoday.com/science/elements-mixtures-compounds/separation-of-mixtures.html

Hi there.

Thanks for your reply. I wish I could use separation, but we have been limited to titration only. I was just wondering if there were any more efficient ways of titrating other than EDTA.

Thanks.

Duncan.

[AWK]

Method for volumetric determination of nitrates exists almost 60 years.

[DuncanWilson]

Method for volumetric determination of nitrates exists almost 60 years.

I there any way to separate these two compounds? They're both very soluble in water.

[billnotgatez]

Just using wikipedia.org I see differences between the items you mention that could be used for separation.

There are probably many sources that give differences between them
are you allowed to use other solvents or heat them or ...

[Borek]

Supposing I had a sample containing a mixture of approximately 2 g of NaNO₃ and Ca(NO₃)₂·4H₂O, what experimental methods could I use to determine the weight of the two components present in the sample? I believe I could use EDTA to complex the Ca²⁺ ion. What else could I do?

If substances given are all that is present determining Ca²⁺ will already tell you the mixture composition.