2H2O=通电=2H2↑+O2↑
CaCO3=高温=CaO+CO2↑
CuO+H2=△=Cu+H2O
MgCI2+2NaOH=Mg(OH)2↓+2NaCl
Ca(OH)2+2HNO3=Ca(NO3)2+2H2O
Na2CO3+2HCI=2NaCl+H2O+CO2↑
2H2O=通电=2H2↑+O2↑
CaCO3=高温=CaO+CO2↑
CuO+H2=△=Cu+H2O
MgCI2+2NaOH=Mg(OH)2↓+2NaCl
Ca(OH)2+2HNO3=Ca(NO3)2+2H2O
Na2CO3+2HCI=2NaCl+H2O+CO2↑