同学们在探究碱的化学性质时�现了一个意外现象�氢氧化钠溶液中滴入酚酞溶液溶液变成了红色但是一会儿红色就消失了.为此某化学小组的同学进行 Template




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tomski同学们在探究碱的化学性质时�现了一个意外现象�氢氧化钠溶液中滴入酚酞溶液溶液变成了红色但是一会儿红色就消失了.为此某化学小组的同学进行 coloring