When fresh grapes are kept in concentrated salt solution they shr… - Vidyadip

Question

When fresh grapes are kept in concentrated salt solution they shrink, whereas when they are kept back in water they swell up. Why?

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Answer

Due to post-osmosis, the solvent moves from the solution of lower concentration to a solution of higher concentration, the grapes cell membrane here acts as semipermeable membrane, when grapes are kept in concentrated solution of salt, water comes out of the grapes and they shrink and after putting them back in water, they swell up and becomes fresh again.

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