Odpowiedź:
a) [tex]K + H_{2}O -> KOH + H_{2}[/tex]
b) [tex]CaO+ H_{2}O -> Ca(OH)_{2}[/tex]
c) [tex]Na_{2}O + H_{2}O -> 2 NaOH[/tex]
d) [tex]Ca + 2 H_{2}O -> Ca(OH)_{2} + H_{2}[/tex]
e) [tex]K_{2}O + H_{2}O -> 2 KOH[/tex]
