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根据下列实验现象,写出方程式在Cr(SO4)溶液中滴加NaOH溶液,先析出灰蓝色胶状沉淀,后又溶解,此时加入溴水,溶液就由绿色转为黄色.用H2O2代替溴水,也可得到同样结果


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更多 “根据下列实验现象,写出方程式在Cr(SO4)溶液中滴加NaOH溶液,先析出灰蓝色胶状沉淀,后又溶解,此时加入溴水,溶液就由绿色转为黄色.用H2O2代替溴水,也可得到同样结果” 相关考题
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