Cu+4HNO₃(浓)=Cu(NO₃)₂+2NO₂↑+2H₂O(不用加热)3Cu+8HNO₃(稀)=△=3Cu(NO₃)₂+2NO↑+4H₂O
Cu+4HNO3(浓)=Cu(NO3)2+NO2↑+2H2O (加热) http://shanxi.zxxk.com/Article/78805.html
