化学小组的同学用下图所示装置探究碱的性质将适量氢氧化钠溶液放入a中先打开止水夹Ⅰ过一会儿再打开止水夹Ⅱ观察到a中溶液澄清小试管中 Template




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tomski化学小组的同学用下图所示装置探究碱的性质将适量氢氧化钠溶液放入a中先打开止水夹Ⅰ过一会儿再打开止水夹Ⅱ观察到a中溶液澄清小试管中 coloring