Make up the reaction equation: 1) CuSO4-Cu (OH) 2-CuO-Cu 2) ZnCl2-Zn (OH) 2-ZnCl2

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

Cu (OH) 2 = CuO + H2O (the decomposition reaction always occurs when heated, therefore, a temperature icon must be indicated above the arrow);

CuO + H2 = Cu + H2O (again, the reaction proceeds at a temperature, so we indicate the temperature icon above the arrow);

2) ZnCl2 + 2KOH = 2KCl + Zn (OH) 2 (you can take NaOH again, then the salt will be NaCl, respectively);

Zn (OH) 2 + HCl = ZnCl2 + H2O (being an amphoteric hydroxide, Zn (OH) 2 can react with both acids and bases, so this reaction is possible)