Na2O+*=NaOH
NaOH+*=Cu(OH)2
Cu(OH)2+*=CuSO4
NaOH+*=NaCl
Cu(OH)2+*=CuO
CuO+*=CuSO4

Предыдущий
вопрос Следующий
вопрос

Just to clarify, in the reactions you provided:

1) Na2O + H2O = 2NaOH (Sodium oxide reacts with water to form sodium hydroxide)
2) 2NaOH + Cu(OH)2 = Na2[Cu(OH)4] (Sodium hydroxide reacts with copper hydroxide to form sodium tetrahydroxocuprate)
3) Cu(OH)2 + H2SO4 = CuSO4 + 2H2O (Copper hydroxide reacts with sulfuric acid to form copper sulfate and water)
4) NaOH + HCl = NaCl + H2O (Sodium hydroxide reacts with hydrochloric acid to form sodium chloride and water)
5) Cu(OH)2 = CuO + H2O (Copper hydroxide decomposes to form copper(II) oxide and water)
6) CuO + H2SO4 = CuSO4 + H2O (Copper(II) oxide reacts with sulfuric acid to form copper sulfate and water)