K2O + H2O = 2KOH
Na2O + H2O = 2NaOH
CaO + H2O = Ca(OH)2
BaO + H2O = Ba(OH)2
Ca + 2H2O = Ca(OH)2 + H2↑
2K + 2H2O = 2KOH + H2↑
2Na + 2H2O = 2NaOH + H2↑
Ba + 2H2O = Ba(OH)2 + H2↑
K2O + H2O = 2KOH
Na2O + H2O = 2NaOH
CaO + H2O = Ca(OH)2
BaO + H2O = Ba(OH)2
Ca + 2H2O = Ca(OH)2 + H2↑
2K + 2H2O = 2KOH + H2↑
2Na + 2H2O = 2NaOH + H2↑
Ba + 2H2O = Ba(OH)2 + H2↑