【简答题】
银量沉淀滴定法测定水中氯离子时，为什么要剧烈地摇动锥形瓶?
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答案
答:因为在测定过程中，先生成的AgCl沉淀容易吸附溶液中的氯离子，使终点提早出现，充分摇动后可使吸附的氯离子与生成的铬酸银作用，避免终点提前到达而产生负误差。
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