化学活动小组的同学用下图所示装置进行实验先关闭止水夹将足量氢氧化钠溶液滴入锥形瓶中充分反应后再打开止水夹1锥形瓶中能观察到的现象 Template




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tomski化学活动小组的同学用下图所示装置进行实验先关闭止水夹将足量氢氧化钠溶液滴入锥形瓶中充分反应后再打开止水夹1锥形瓶中能观察到的现象 coloring