Ba(NO3)2+2Na2SO4=Ba(SO4)2+2Na(NO3)
1) Ba(NO3)2+Na2SO4-->2NaNO3+BaSO4↓
Ba²⁺+2NO²⁻₃+2Na⁺+SO²⁻₄-->2Na⁺+2NO²⁻₃+BaSO4↓
Ba²⁺+SO²⁻₄-->BaSO4↓
2Na3PO4+3CaCL2-->6NaCL+Ca3(PO4)2↓
6Na⁺+2PO²⁻₄+3Ca²⁺+6CL⁻-->6Na⁺+6CL⁻-->Ca3(PO4)2↓
2PO²⁻₄+3Ca²⁺--->Ca3(PO4)2↓
Ba(NO3)2+2Na2SO4=Ba(SO4)2+2Na(NO3)
1) Ba(NO3)2+Na2SO4-->2NaNO3+BaSO4↓
Ba²⁺+2NO²⁻₃+2Na⁺+SO²⁻₄-->2Na⁺+2NO²⁻₃+BaSO4↓
Ba²⁺+SO²⁻₄-->BaSO4↓
2Na3PO4+3CaCL2-->6NaCL+Ca3(PO4)2↓
6Na⁺+2PO²⁻₄+3Ca²⁺+6CL⁻-->6Na⁺+6CL⁻-->Ca3(PO4)2↓
2PO²⁻₄+3Ca²⁺--->Ca3(PO4)2↓