Description of experiment
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Needed compounds:
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sodium hydroxide : NaOH
sodium persulfate : Na2S2O8
lead nitrate : Pb(NO3)2
Class:
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elem=Pb,O
precipitate
redox
Summary:
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Lead builds a yellow precipitate with hydroxide and peroxosulfate. This
probably is an oxidation product of lead (II).
Description:
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Add some solid Na2S2O8 to a solution of Pb(NO3)2: A white precipitate is
formed (this may be lead sulfate, which may be due to impurities in the
peroxosulfate).
Add some solid NaOH: The solid dissolves and a yellow/ochre precipitate is
formed.