作者BIEGABOY (BIEGABOY)
看板TransBioChem
標題[問題] 兩個小問題
時間Tue Jul 6 17:51:48 2010
1. For this balanced equation,
[Cu(NH3)4]2+ + [S2O4]2- +2H20 ---> Cu +2[SO3]2- +4[NH4]+
determine the number of electrons gained and lost, per atom， by the oxidizing
and reducing elements，respectively?
a.1，1 b.2，2 c.2，1 d.2，4
我是選c，因為題目有per atom??
2. The compond Mn02 is dound to be stable in the presence of HN03. Mn02
readily dissolves in HCl. Which statement best explains this behavior?
a.the nitrate ion cannot oxidize Mn02
b.Mn02 cannot oxidize the nitrate
c.the Cl- reduces Mn from 4+ to 2+
d.basic Mn02 is neutralized by HCl
a，b不知道選何者比較好??覺得是a...硝酸跟離子無法氧化Mn4+吧!!!
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◆ From: 58.114.85.80
1F：推 lancerfin:你打錯了......[S2O4]是2"-" 07/06 21:11
※ 編輯: BIEGABOY 來自: 118.171.45.157 (07/06 21:14)
2F：推 lancerfin:而且"[NH3]+" 哪來的"+" NH3就NH3 07/06 21:16
3F：推 lancerfin:[Cu(NH3)4]2+ +[S2O4]2- +2H20->Cu +2[SO3]2- +4NH3+2H+ 07/06 21:22
※ 編輯: BIEGABOY 來自: 114.39.6.168 (07/06 22:28)
4F：→ BIEGABOY:是NH4.. 07/06 22:29