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· Web view2015/03/27 · 2Fe2＋ + Cl2 2Fe3＋ + 2Cl－,2Br－ + Cl2 Br2 + 2Cl－，2FeBr2 + 3Cl2 2FeCl3 + 2Br2 。当x/a ≤0.5时，Cl2仅氧化Fe2＋，故A项正确。当x/a
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