1) Na+
Fe2+
Fe3+
2) Ba(OH)2 = Ba2+ + 2OH-
H3PO4 = H+ + PO43-
3) K+OH-
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1) Na+
Fe2+
Fe3+
2) Ba(OH)2 = Ba2+ + 2OH-
H3PO4 = H+ + PO43-
3) K+OH-