A bottle containing a perfume is by mistake open.aftera few days, its volume was found to have reduced to half. Explain giving reason
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If we leave a perfume bottle open for a while, the smell of perfume will permeate the room. Volatile perfume molecules leave the bottle and move randomly through the room. When the concentration of perfume molecules becomes sufficiently large near your nose, your olfactory system sends a message to your brain that you smell perfume.
Such diffusion is an excellent example of spreading phenomena. Highly mobile molecules get bounced around by other molecules and tend to move in all directions. Gaseous perfume molecules can bounce off the bottle's side walls, remaining in the bottle. But molecules that move upward have an easy path out of the bottle. And once they are out, they are free to move in any direction, bumping into molecules of air as they travel. The release of more and more perfume molecules into the air can continue for quite a while because the number of perfume molecules is enormous, and a typical room is much larger than a perfume bottle. Given enough time nearly all the original perfume molecules will be out of the bottle.
Such diffusion is an excellent example of spreading phenomena. Highly mobile molecules get bounced around by other molecules and tend to move in all directions. Gaseous perfume molecules can bounce off the bottle's side walls, remaining in the bottle. But molecules that move upward have an easy path out of the bottle. And once they are out, they are free to move in any direction, bumping into molecules of air as they travel. The release of more and more perfume molecules into the air can continue for quite a while because the number of perfume molecules is enormous, and a typical room is much larger than a perfume bottle. Given enough time nearly all the original perfume molecules will be out of the bottle.
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