CuO + N2O5 = Cu(NO3)2 + NO2
P2O5 + K2O = 2KPO3
NaOH + HCN = NaCN + H2O
Zn(OH)2 + Ca(OH)2 = Zn(CaOH)2
Ca(OH)2 + KHS = CaS + H2O + KOH
CuO + N2O5 = Cu(NO3)2 + NO2
P2O5 + K2O = 2KPO3
NaOH + HCN = NaCN + H2O
Zn(OH)2 + Ca(OH)2 = Zn(CaOH)2
Ca(OH)2 + KHS = CaS + H2O + KOH