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Topic: Solubility differences between Pb(NO3)2 and AgNO3  (Read 5309 times)

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Offline mandog

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Solubility differences between Pb(NO3)2 and AgNO3
« on: August 01, 2014, 04:22:44 AM »
Hey, I am currently doing a solubility assignment where there is two bottles of solutions but the labels have come off. One contains silver nitrate and the other contains lead nitrate. Using only solubility rules and precipitation reactions you have to distinguish which bottle contains which. However, I find that Ag and Pb tend to stick together in the solubility rules and I can't find a way of distinguishing them. IF someone could please help me that would be great, because I am really stuck at the moment.
Thanks,
Mani
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Offline Borek

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Re: Solubility differences between Pb(NO3)2 and AgNO3
« Reply #1 on: August 01, 2014, 05:20:37 AM »
Hot solutions?
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Offline Arkcon

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Re: Solubility differences between Pb(NO3)2 and AgNO3
« Reply #2 on: August 01, 2014, 05:57:43 AM »
Different colors of a certain salt of a particular metal?  Different consistencies of the precipitate?  Differences in redissolving a precipitate with a particular reagent?
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Offline Corribus

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Re: Solubility differences between Pb(NO3)2 and AgNO3
« Reply #3 on: August 01, 2014, 09:21:33 AM »
Though AgCl and PbCl2 are both fairly insoluble, their actual Ksp values are several orders of magnitude different. Also, the stoichoimetry is different, so I wonder if you can exploit a common ion effect by adding, say, sodium chloride and watching how the precipitation behavior changes.
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