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第一部分:基础题 1.下列关于Cl~-和Cl_2的叙述中,正确是 A.都有毒 B.都能与活泼金属反应 C.都是黄绿色 D.加到硝酸银溶液中都会产生白色沉淀 2.要想除去液溴中溶解的少量Cl_2,可采用的方法是 A.加入适量氯化钠 B.加入适量溴化钠 C.加入适量氯气 D.加入适量溴蒸气
Part I: Basic Questions 1. In the following description of Cl~- and Cl2, it is correct that A. is toxic B. can react with reactive metals C. are both yellowish green D. white precipitates are added to silver nitrate solution 2. In order to remove a small amount of Cl 2 dissolved in liquid bromine, the methods that can be used are: A. Add appropriate amount of sodium chloride B. Add appropriate amount of sodium bromide C. Add appropriate amount of chlorine D. Add appropriate amount of bromine vapor