Na-Na2O-NaOH-H2O-NaOH-NaCl
4Na + O2 = 2Na2O
Na2O + 2H2O = 2NaOH + O2
NaOH + HCl = NaCl + H2O
H2O + NaCl = NaOH + HCl
1. Na + O2 = Na2O 2. Na2O+ H2O = 2NaOH 3. NaOH =(высок темпер) = Н2O + Na2O 4. H2O + Na2O = 2NaOH 5. NaOH + HCl = NaCl + H2O
4Na + O2 = 2Na2O сори)