Đề thi Hóa

L

luffy_95

bai 2 minh lam nhu the nay khong biet dung khong?
:khi (2):

ta co
[TEX]S^{+6}+ 2e ---> S^{+4}[/TEX]
-------- [TEX]0,5 mol[/TEX]

vay phai lay [TEX]0,25 mol [/TEX]nhung chat khi tac dung voi [TEX]H_{2}SO_4 [/TEX]nhan 2e
 
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