Na-NaOH-Na3PO4-Ca3(PO4) 2

Question

Na-NaOH-Na3PO4-Ca3(PO4) 2

Answer 1

2Na + 2H2O -> 2NaOH + H2
3NaOH + H3PO4 -> Na3PO4 + 3H2O
  2Na3PO4 + 3CaCl2 -> Ca3(PO4)2 +6 NaCl