取一小块氢氧化钠固体置于蒸发皿中，隔一段较长时间后滴加稀盐酸
侯英超 |
发布日期：2010-05-30 08:28:09
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取一小块氢氧化钠固体置于蒸发皿中，隔一段较长时间后滴加稀盐酸，可以观察到的现象是（ ） A. 有白色沉淀 B. 有气泡放出 C. 有白色沉淀，同时有气泡放出 D. 看不到明显变化 |
