Mg3(PO4)2+NaOH=? Na2SO3+H3PO4=? ZnO+H2SO4=? CrCL3+Mg=?

Question

Mg3(PO4)2+NaOH=?
Na2SO3+H3PO4=?
ZnO+H2SO4=?
CrCL3+Mg=?

Answer 1

Mg3(PO4)2+2NaOH⇒ 3Mg(OH)2 + 2Na3PO4 
3Na2SO3+2H3PO4⇒ 2Na3PO4 + 3Н2SO3 
ZnO+H2SO4⇒ ZnSO4 + H2O
2CrCL3+Mg⇒ MgCl2+2CrCl2