a) HBr+KOH--->KBr+H2O
2K+2HBr--->2KBr+H2
K2O+2HBr--->2KBr+H2O
b) H2S+Zn(OH)2--->ZnS+2H2O
Zn+H2S--->ZnS+H2
ZnO+H2S--->ZnS+H2O
c) 2HNO3+Ca(OH)2--->Ca(NO3)2+2H2O
Ca+2HNO3--->Ca(NO3)2+H2
CaO+2HNO3--->Ca(NO3)2+H2O
d) H2SO4+2KOH--->K2SO4+2H2O
2K+H2SO4--->K2SO4+H2
K2O+H2SO4--->K2SO4+H2O
e) H3PO4+3LiOH--->Li3PO4+3H2O
6Li+2H3PO4--->2Li3PO4+3H2
3Li2O+2H3PO4--->2Li3PO4+3H2O
