so2通入bacl2溶液中并不产生沉淀而通入另一种气体后可以产生白色沉淀 则如图右侧y形管中放置的药品组合不符合要求的是a.cu和浓硝酸 Template




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tomskiso2通入bacl2溶液中并不产生沉淀而通入另一种气体后可以产生白色沉淀 则如图右侧y形管中放置的药品组合不符合要求的是a.cu和浓硝酸 coloring