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未知反應-2

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Uploaded by on Feb 26, 2008

與氧化劑還原劑有關的化學反應,還不知道原先的紫色溶液為何?暫不清楚,先行收藏!

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  • 中五級化學

  • 方程式 is zrb32

  • 紫色液体KMnO4,高锰酸钾

    离子方程式:

    2MnO4- + 6H+ + 5H2O2 = 2Mn2+ + 8H2O + 5O2

    化学方程式:

    2KMnO4 + 3H2SO4 + 5H2O2 = 2MnSO4 + K2SO4 + 8H2O + 5O2

  • 加入H2SO4是為了酸化KMnO4

    過氧化氫是還原劑,用作還原劑時產物為氧氣

    所以看到有氣泡,加上MnO4-被還原成Mn2+

    所以溶液由紫色轉到無色

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