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在中学化学中,Fe~(3+)的性质是难点,但很有趣。 棕黑色的氯化铁晶体,其酸性溶液(pH=0左右)呈淡紫色。
In middle school chemistry, the nature of Fe~(3+) is difficult but interesting. Brown-black ferric chloride crystals, whose acidic solution (around pH=0) is lavender.