Na2O+H2O=2NaOHMgCl2+2NaOH=2NaCl+Mg(OH)2↓
Na2O+H2O=2NaOH;2NaOH+MgCl2=2NaCl+Mg(OH)2↓有问题请追问~
na2o+mgcl2=2nacl+mgo