Gửi lúc - 14/02/2003 : 17:27:33
Neu cho HNO3 tac' dung kim loai cho ra:
(1)chat ket tua~
(2) chat bay hoi mau` nau do~
(3) chat bay hoi ko mau` ra ngoai` khong khi' mau` do~
(4) chat khi' khong mau` ko hien tu*ng
cac chat tren la` nhu~ng chat gi`?
neu dieu` kien sinh ra ?
Tuan!!!thanks!!! acquy_thienthan20002@yahoo.com
Gửi lúc - 20/02/2003 : 09:21:45
(1)do la cac kim loai quy nhu Au hay Pt khong tac dung duoc voi HNO3.vi cac kim loai khac khi tac dung voi HNO3 deu tao thanh muoi tan
(2) do la NO2 co mau nau do , dieu kien la kim loai manh hay trung binh tac dung voi axit dac
(3) do la NO khong mau , tac dung voi O2 khong khi o dk thuong tao thanh NO2
(4) chat khi do la N2O hay N2
Help Me!!!
Gửi lúc - 14/02/2003 : 17:27:33 
