| T O P I C R E V I E W |
| nj friend |
Posted - 25/12/2002 : 11:07:31
satIIdisunfua(FeS2)+axit sunfuric d,n(H2SO4 d,n)
sat sunfua(FeS)+H2SO4(d,n)
Cu2S+HNO3
ra san pham gi ?
neu cach can bang cu the tung bai?
co the gui email cho minh : nam10_2_1985@hcm.vnn.vn
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| 15 L A T E S T R E P L I E S (Newest First) |
| trungkienvtk |
Posted - 15/03/2003 : 10:37:27
cu2s
+ hno3=cu(NO3)2+h2so4+h2o .cb rat de
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| hocsinhguongmau |
Posted - 08/03/2003 : 19:14:06
CuS2 + HNO3dn ---> CuNO3 + NO + H20
can bang bang p/u oxy hoa khu
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| datacnhang1 |
Posted - 24/02/2003 : 14:27:00
minh van luon bao ve quan diem cua minh
minh vuimung khi co nhieu ban co cung quan diem:
HCOOH + H2 ko xay ra
chuc cac ban vui ve
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| taituhollywood |
Posted - 21/02/2003 : 20:29:41
cho minh tham gia voi
that ra axit fomic khong the tac dung duoc voi H2 vi nhu the minh ko the viet duoc phuong trinh vi phuong trinh cua axit focmic la : H-cooH nen khi tac dung voi H2 thi phai viet lam sao .
taitu
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| hoang cong tuan |
Posted - 14/02/2003 : 17:34:44
theo mi`nh thi` chac chan co Fe2(SO4)3 nhung co`n nhu~ng chat
sau thi` ko phai cu' la` SO2 & H2O.co' the la` H2S hoac S ket tua
do do' tuy` tu~ng de^` bai` cho ma` ta du doan' chat sau PU~.
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| salem85 |
Posted - 13/02/2003 : 13:40:22
cac axit huu co khong the khu duoc bang cac chat khu thong thuong nhu H2 nhung co the khu duoc bang LiAlH4 tao thanh ancol bac mot
cung xin hoi ban ami1986 sao minh doc het cuon TAI LIEU GIAO KHOA CHUYEN HOA HOC 11_12 tap 1 roi ma sao khong thay co phan ung axit focmic tac dung voi H2 khi co xuc tac Ni, Pt
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| might |
Posted - 01/02/2003 : 22:51:46
ami1986 noi lon roi, a.fomic la HCOOH chu dau phai la HCHO.
HCOOH dung ra la cong H2 duoc vi cung co lk pi nhung ma san pham la ruou co 2nhom OH tren cung 1C nen khong ben coi nhu la khong co phan ung.
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| NEO |
Posted - 27/01/2003 : 22:28:45
tr�ch:
Tra loi bai cua ban : nj friend
Theo Toi thi vi H2SO4 dn nen hau het cac chat neu tac dung duoc deu bi khu len hoa tri cao nhat dong thoi giai phong SO2 .Vi vay Toi co dap an nhu sau :
FeS2 + H2SO4 d,n - Fe2(SO4)3 + SO2 + H2O
FeS + H2SO4 d,n - Fe2(So4)3 + SO2 + H2O
Luu y : Tuy 2 phan ung co san pham giong nhau nhung he so can bang hoan toan khac vi (1) : 2S1- + 2*5e = 2S4+
(2) : S2- + 6e = S4+
Phan ung con lai thi : Cu2S+HNO3 = Cu(NO3)2 + NO + H2SO4 + H2O
Day chi la Minh hoa cua phan ung vi co le doi voi truong hop nay thi de nen cho san pham khi ra la khi gi ?
Con can bang tung phan ung thi qua de roi phai ko ban ( neu co gi ban xem lai sach Hoa Lop 10 se co cach huong dan ban )
Chuc ban thanh cong !!!
Co gi ban lien lac voi minh :
Huy : Xuanhuymc@hotmail.com .
phone : 0511 836232
Xuan Huy
Ban nao o HCM va HN xin lam on cho minh de thi HKI 02-03 T-L-H nha - Minh cam on - Ban goi vao mail cho minh : xuanhuymc@hotmail.com
Xuan Huy
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| NEO |
Posted - 27/01/2003 : 22:24:16
Tra loi bai cua ban : nj friend
Theo Toi thi vi H2SO4 dn nen hau het cac chat neu tac dung duoc deu bi khu len hoa tri cao nhat dong thoi giai phong SO2 .Vi vay Toi co dap an nhu sau :
FeS2 + H2SO4 d,n - Fe2(SO4)3 + SO2 + H2O
FeS + H2SO4 d,n - Fe2(So4)3 + SO2 + H2O
Luu y : Tuy 2 phan ung co san pham giong nhau nhung he so can bang hoan toan khac vi (1) : 2S1- + 2*5e = 2S4+
(2) : S2- + 6e = S4+
Phan ung con lai thi : Cu2S+HNO3 = Cu(NO3)2 + NO + H2SO4 + H2O
Day chi la Minh hoa cua phan ung vi co le doi voi truong hop nay thi de nen cho san pham khi ra la khi gi ?
Con can bang tung phan ung thi qua de roi phai ko ban ( neu co gi ban xem lai sach Hoa Lop 10 se co cach huong dan ban )
Chuc ban thanh cong !!!
Co gi ban lien lac voi minh :
Huy : Xuanhuymc@hotmail.com .
phone : 0511 836232
Xuan Huy
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| rey_sailor |
Posted - 23/01/2003 : 20:46:13
um!
minh dong y voi ban ami!
minh cung nghi axit fomic td duoc voi h2 nen da lam the nhung bai thi cua minh lai bi tru diem. minh uc lam
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| ami1986 |
Posted - 23/01/2003 : 08:44:46
datacnhang1 sai ru`iiiiiiiiiii , ko tin ah ? U thu xem sach Tai Lieu Giao Khoa Chuyen Hoa Hoc 11 tap 1 xem , tui ho.c tuui biet ma !
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| hakashe_ashuka |
Posted - 21/01/2003 : 20:32:20
theo tui thi san pham phai la sat 3+so2+h2s
ko biet co -hpai vay ko nhi
thoi, de tui ve xem lai phan li thuyet da vay
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| hakashe_ashuka |
Posted - 21/01/2003 : 10:01:11
fes2+h2so4(d,n) ko ra san pham nhu vay dau
ba linh3310 nham rui
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| linh3010 |
Posted - 19/01/2003 : 13:52:48
FeS2+H2SO4(d,n) -> Fe2(SO4)3 + SO2 +H20(can bang oxi hoa khu)
Cho tui tham gia voi
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| datacnhang1 |
Posted - 19/01/2003 : 10:59:26
Minh ko dong quan diem voi ban AMI1986
Co the minh sai nhung do la y kien cua minh
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