Na2O+H2O-> CuSO4+NaOH-> BaCL+H2SO4->

Question

Na2O+H2O-> CuSO4+NaOH-> BaCL+H2SO4->

Answer 1

Na2O+H2O-> 2NaOH

CuSO4+2NaOH-> Na2SO4 + Cu(OH)2 (осадок, стрелка вниз)

BaCL2+H2SO4-> BaSO4(осадок, стрелка вниз) + 2HCl

Answer 2

Na2O+H2O=2NaOH

CuSO4+2NaOH=Cu(OH)2+Na2SO4

BaCl2+H2SO4=BaSO4+2HCl