4Zn+10HNO3(极稀)4Zn(NO3)2+N2O+5H2O；
3Zn+8HNO3（稀）===3Zn(NO3)2+2NO+4H2O
Zn+4HNO3（浓）===Zn(NO3)2+2NO2+2H2O