在硝酸铜和硝酸银溶液中加入一定量的铁粉充分反应后过滤在所得的滤渣中加入�量的稀盐酸无明显现象则上述过滤时滤纸上的物质可能是afeb Template




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tomski在硝酸铜和硝酸银溶液中加入一定量的铁粉充分反应后过滤在所得的滤渣中加入�量的稀盐酸无明显现象则上述过滤时滤纸上的物质可能是afeb coloring