有甲乙丙丁四中液体,它们分别为Fe(OH)3胶体,硅酸胶体,As2S3胶体,NaOH溶液.现将有关实验现象记录如下:(提示H2SiO3+2NaOH===Na2SiO3+2H2O)(1)电场中甲液体的阳极(显正电性)周围颜色变浅,阴极周围颜色
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![有甲乙丙丁四中液体,它们分别为Fe(OH)3胶体,硅酸胶体,As2S3胶体,NaOH溶液.现将有关实验现象记录如下:(提示H2SiO3+2NaOH===Na2SiO3+2H2O)(1)电场中甲液体的阳极(显正电性)周围颜色变浅,阴极周围颜色](/uploads/image/z/503426-2-6.jpg?t=%E6%9C%89%E7%94%B2%E4%B9%99%E4%B8%99%E4%B8%81%E5%9B%9B%E4%B8%AD%E6%B6%B2%E4%BD%93%2C%E5%AE%83%E4%BB%AC%E5%88%86%E5%88%AB%E4%B8%BAFe%28OH%293%E8%83%B6%E4%BD%93%2C%E7%A1%85%E9%85%B8%E8%83%B6%E4%BD%93%2CAs2S3%E8%83%B6%E4%BD%93%2CNaOH%E6%BA%B6%E6%B6%B2.%E7%8E%B0%E5%B0%86%E6%9C%89%E5%85%B3%E5%AE%9E%E9%AA%8C%E7%8E%B0%E8%B1%A1%E8%AE%B0%E5%BD%95%E5%A6%82%E4%B8%8B%EF%BC%9A%28%E6%8F%90%E7%A4%BAH2SiO3%2B2NaOH%3D%3D%3DNa2SiO3%2B2H2O%29%281%29%E7%94%B5%E5%9C%BA%E4%B8%AD%E7%94%B2%E6%B6%B2%E4%BD%93%E7%9A%84%E9%98%B3%E6%9E%81%28%E6%98%BE%E6%AD%A3%E7%94%B5%E6%80%A7%29%E5%91%A8%E5%9B%B4%E9%A2%9C%E8%89%B2%E5%8F%98%E6%B5%85%2C%E9%98%B4%E6%9E%81%E5%91%A8%E5%9B%B4%E9%A2%9C%E8%89%B2)
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