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OpenStudy (anonymous):
In our lab we identified 6 unknown compounds based on its reactions w/ other compounds. 2 were INSOLUBLE(CaCO3 and MgO). The question ask why AgNO3 was NOT used to test the insoluble compounds.
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OpenStudy (aaronq):
Nitrates are all soluble, Ag complexes are pretty insoluble... so maybe because it's not cheap? lol I'm not sure, maybe the other unknowns didnt precipitate with silver.
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