Question

Na2O-NaOH-Cu(OH)2-CaSO4

Answer 1

Ответ:

2Na + 2H2O = 2NaOH + H2↑

2NaOH + H2SO4 = Na2SO4 + 2H2O

Na2SO4 + BaCl2 = BaSO4↓ + 2NaCl

4Na + O2 = 2Na2O

Na2O + H2O = 2NaOH

2NaOH + CuCl2 = Cu(OH)2↓ + 2NaCl

Cu(OH)2 -> CuO + H2O

Объяснение:

Answer 2

Ответ:

Na2O+H2O—2NaOH

2NaOH+Cu(NO3)2—Cu(OH)2+2NaNO3

Cu(OH)2+CaSO4—Ca(OH)2+CuSO4