What happens to dry raisins when we put them in plain water for sometime.what would happen if these raisins are not placed in concentrated salt solution?
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when raisen put into water they swell up
when raisins are not placed into concetrated salt solution it does not show any effect
when raisins are not placed into concetrated salt solution it does not show any effect
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Dry Raisins when placed in plain water will swell up. Dry Raisins when compared with water have low concentration of water or high solute concentration or we can even say in more specific way as having low water potential.
We can say that the plain water is a hypotonic solution w.r.t the raisins. There is a concentratiin gradient set up across the membrane. So water moves into the raisins from higher to lower concentration (endosmosis). The raisins will be swollen up.
If they are placed in a concentrated solution(hypertonic) the reverse would happen. The raisins will shrink.
The phenomenon that is happen in these case is Osmosis.
We can say that the plain water is a hypotonic solution w.r.t the raisins. There is a concentratiin gradient set up across the membrane. So water moves into the raisins from higher to lower concentration (endosmosis). The raisins will be swollen up.
If they are placed in a concentrated solution(hypertonic) the reverse would happen. The raisins will shrink.
The phenomenon that is happen in these case is Osmosis.
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