Вопрос от посетителя:
Na2SO4 => NaOH => Na2O => NaOH => NaCl
Илюха отвечает:
1) Na2SO4 + KOH = NaOH + K2SO4
2) 2NaOH = (t) Na2O + H2O
3) Na2O + H2O = 2NaOH
4) NaOH + KCl = NaCl + KOH
Na2SO4 => NaOH => Na2O => NaOH => NaCl
1) Na2SO4 + KOH = NaOH + K2SO4
2) 2NaOH = (t) Na2O + H2O
3) Na2O + H2O = 2NaOH
4) NaOH + KCl = NaCl + KOH