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2AlCl₃+3K₂SO₄--->Al₂(SO₄)₃+6KCl - nie pasuje
3Ca(NO₃)₂+2Na₃PO₄--->Ca₃(PO₄)₂+6NaNO₃ - nie pasuje
2FeCl₃+3K₂S--->Fe₂S₃+6KCl - pasuje