下表列举了四组待鉴别的物质和对应的鉴别方法其中合理的是 待鉴别的物质 鉴别方法 A 纯碱和熟石灰 加入无色酚酞观察溶液颜色的变化 b H2 Template




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tomski下表列举了四组待鉴别的物质和对应的鉴别方法其中合理的是 待鉴别的物质 鉴别方法 coloring