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匿名 發問於 科學及數學化學 · 1 十年 前

鉀和鎂為什麼需要儲存在油中?

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4 個解答

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  • 1 十年 前
    最佳解答

    It is becouse potassium is belongs to the group I,

    which is a reactive metal.

    If you just put it in the air,

    since it is reactive,

    it will react with the air(oxidize)

    and change its property.

    Oil can prevent the enterring of air(oxygen) to react with the potassium.

    For Mg,

    it is not so reactive as potassium so it should not be put in the oil.

    資料來源: me
  • 1 十年 前

    因為鉀和鎂(還有鈉等)都是極為活潑的金屬,一遇到空氣便容易氧化,所以要儲存在油中.

  • 1 十年 前

    Since potassium is a very reactive metal, it will react with oxygen in air to form potassium oxide (2K+O2---->2KO), so it is stored under paraffin oil to prevent reaction with oxygen.

    Beside, magnesium is not necessarily stored under paraffin oil, since it is a less reactive metal than potassium, though it has slow reaction with oxygen.

    資料來源: me
  • 1 十年 前

    和空氣中的氧產生化學反應

    在外層產生一層氧化物

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