I am having problems precipitating MnO2 from a dissolved...

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Question by serefif
Submitted on 2/25/2004
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I am having problems precipitating MnO2 from a dissolved rock sample. I used anion columns to separate the Mn, but still cannot reproducibly ppt MnO2. I am adding 14M HNO3 and KCL03 crystals (perchlorate 15x excess of Mn in solution). Any suggestions?

Answer by Mitul
Submitted on 3/13/2005
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Rather than doing extraction diractoly do one thing remove impurity step by step if you rock sample dosent contain calcium than leach with H2SO4 and than wash it you will get pure MnO2 and if it contains calcium than first wash with HCL and than leach with H2SO4

Answer by Konstanta
Submitted on 6/7/2005
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i just wanna ask about my experiment, i have a problem using MnSO4.H2O to get a MnS thin film?

Answer by luke
Submitted on 10/18/2005
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try it with H2O2 and HCl to rebuild MnO2

Answer by PisgahChemist
Submitted on 1/9/2007
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It's more likely that Mn is reduced to Mn2+. MnO2 usually occurs in a basic solution.

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