Description of experiment
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Needed compounds:
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sulphuric acid : H2SO4
copper tetrammine sulfate mono hydrate : [Cu(NH3)4] SO4 . H2O
Class:
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elem=Cu
precipitation
Summary:
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Copper tetrammine sulfate only dissolves very slowly in not too strongly
diluted sulphuric acid.
Description:
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Add some solid copper tetrammine sulfate to some sulfuric acid (appr. 30% by
weight): The crystals are covered by a pale blue gelatinous layer. This layer
causes them to dissolve very slowly, but finally they dissolve completely.