chem- equation

kazinvictus

2010-03-08 4:45 am

1) KMnO4 + H2O2 + Sulfuric acid => ?

2) KMnO4 + Iron(II) ammonium sulfate + Sulfuric acid => ?

Thz!

回答 (3)

Kalvin

2010-03-08 6:23 am

✔ 最佳答案

1.
MnO4- + 8H+ + 5e- -->Mn2+ + 4H2O-----(1)
H2O2-->O2 + 2H+ + 2e- -----------------------(2)
(1)x2, (2)x5
2MnO4- + 16H+ + 10e- -->2Mn2+ + 8H2O
5H2O2-->5O2 + 10H+
--------------------------------------------------------------------------
2MnO4 + 5H2O2 + 6H+ -->2Mn2+ + 5O2 + 8H2O

2.
MnO4- + 8H+ + 5e- -->Mn2+ + 4H2O-----(1)
Fe2+ -->Fe3+ + e- -------------------------------(2)
(2)x5
5Fe2+ -->5Fe3+ + 5e-
----------------------------------------------------------------------------
MnO4- + 5Fe2+ + 8H+ -->Mn2+ + 5Fe3+ + 4H2O

hope i can help u

參考: me

👍 0 👎 0

匿名

2010-03-08 10:36 pm

Iron(II) ammonium sulfate
Fe 2+ NH4 + SO4 2- ??????

👍 0 👎 0

老爺子

2010-03-08 6:12 am

1)
2KMnO4 + 5H2O2 + 3H2SO4 → K2SO4 + 2MnSO4 + 8H2O + 5O2

2)
2KMnO4 + 10FeSO4 + 8H2SO4 → K2SO4 + 2MnSO4 + 5Fe2(SO4)3 + 8H2O

參考: 老爺子

👍 0 👎 0