1) NaOH и CuO:NaOH + CuO → Na2O + Cu(OH)2
2) HCl и NaOH:HCl + NaOH → NaCl + H2O
3) Na и CuO:2Na + CuO → Na2O + Cu
4) NaCl и O2:4NaCl + O2 → 2Na2O + 2Cl2
1) NaOH и CuO:
NaOH + CuO → Na2O + Cu(OH)2
2) HCl и NaOH:
HCl + NaOH → NaCl + H2O
3) Na и CuO:
2Na + CuO → Na2O + Cu
4) NaCl и O2:
4NaCl + O2 → 2Na2O + 2Cl2