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so2为什么能使“酸性”kmno4褪色而不是中性呢
so2为什么能使“酸性”kmno4褪色而不是中性呢
2025-03-16 13:46:29
推荐回答(1个)
回答1:
SO2使KMnO4褪色的原因是,KMnO4溶液为紫色,是MnO4-离子的颜色,酸性KMnO4溶液具有强氧化性,可使溶液中的+4价硫元素氧化成+6价,而自身被还原,所以溶液就变为无色了。
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