H2+Cl2 =2HCl
2H3PO4+3MgO=Mg3(PO4)2 +3 H2O
3CaCl2+2K3PO4=Ca3(PO)4 +6 KCl
2Zn+ O2=2ZnO
3Ca+ N2=Ca3N2
Ca + 2HCl= CaCl2+ H2
H2+Cl2 =2HCl
2H3PO4+3MgO=Mg3(PO4)2 +3 H2O
3CaCl2+2K3PO4=Ca3(PO)4 +6 KCl
2Zn+ O2=2ZnO
3Ca+ N2=Ca3N2
Ca + 2HCl= CaCl2+ H2