Ответ:
1. 3NaOH+H3PO4 -> Na3PO4 + 3H2O
2. -> 2SO3
3. ->Fe2O3 + H2O
4. -> CaCl2+H2O
5.-> FeCl2+ H2
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Ответ:
1. 3NaOH+H3PO4 -> Na3PO4 + 3H2O
2. -> 2SO3
3. ->Fe2O3 + H2O
4. -> CaCl2+H2O
5.-> FeCl2+ H2