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установите соответствие между исходными веществами и продуктами реакции. исходные вещества           продукты реакции

А)H3PO4+Na2S->              1)не взаимодействуют

Б)H3PO4+NaOH->             2)H2S+Na3PO4

В)H3PO4+Na2SO4->         3)Na3PO4+H2O

                                                4)H2SO4+Na3PO4

                                                 5)Na3PO4+H2O

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