21. Solving a chemistry problem
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21. Solving a chemistry problem
99. 1) Indicate which cations will be: a) in solution, b) in the precipitate and in the form of what compounds, if an excess of NaOH acts on a solution of a mixture of cations of five analytical groups
2) Write the reaction equations between NaOH (in excess) and cations Mg2, Fe2, Cr3, Sn2, Pb2.
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