Question

Explain why if a bottle full of concentrated sulphuric acid is left open in the atmosphere by
accident the acid starts flowing out of the bottle of its own?
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Answer 1

Answer:

If allowed to stand in the open air, it will absorb moisture from the atmosphere, which will affect its concentration. →Concentrated sulphuric acid is highly hygroscopic. It absorbs moisture from air and gets diluted. Since the volume increases, the acid starts flowing out of bottle.