Question

25 mL each of water and alcohol are taken in two seperate dishes and left exposed to air. What do you expect to observe?

Answer 1

There is no reaction with water. However, alcohols burn in the air, releasing energy and producing carbon dioxide and water.



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Answer 2

The alcohol will be evaporated much faster than the water.

• There are two types of substances, according to the capabilities of evaporation, 1) Volatile and 2) Non volatile.
• The volatile substances get easily evaporated even at the room temperature and vice versa for the non volatile substance.
• Here, the alcohol is a volatile substance and water is a non volatile substance. So, due to the exposure to air, the alcohol will be evaporated in no time.
• On the other hand, the water will take a long time span, to get completely evaporated.