Odpowiedź :
a) Ca(OH)2+H2S--->CaS+2H2O
Ca+H2S--->CaS+H2
CaO+H2S--->CaS+H2O
b) 2NaOH+H2SO4--->Na2SO4+2H2O
2Na+H2SO4--->Na2SO4+H2
Na2O+H2SO4--->Na2SO4+H2O
c) 3KOH+H3PO4--->K3PO4+3H2O
6K+2H3PO4--->2K3PO4+3H2
3K2O+2H3PO4--->2K3PO4+3H2O
a) Ca(OH)2+H2S--->CaS+2H2O
Ca+H2S--->CaS+H2
CaO+H2S--->CaS+H2O
b) 2NaOH+H2SO4--->Na2SO4+2H2O
2Na+H2SO4--->Na2SO4+H2
Na2O+H2SO4--->Na2SO4+H2O
c) 3KOH+H3PO4--->K3PO4+3H2O
6K+2H3PO4--->2K3PO4+3H2
3K2O+2H3PO4--->2K3PO4+3H2O