80. Two young chemist investigated the interaction of p

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80. Two young chemist investigated the interaction of potassium sulfide solutions and potassium dichromate. One of them was a precipitate insoluble in dilute sulfuric acid, but soluble in concentrated nitric acid with heating, the second - the precipitate is partially soluble in dilute sulfuric acid. Explain why the results obtained by different studies. Write the reactions.

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Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)

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