Hyperosmolar solution of NaCl is hypertonic but hyperosmolar solution of urea is not hypertonic because

Question

Answer

Na +  is practically imperameable to cell membrane and urea is permeable to cell membrane

Answer

NaCl is soluble and urea is insoluble in water

Answer

Na +  ion is smaller than urea

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urea can exert osmotic effect and Na +  cannot exert osmotic effect

Answer

water cannot move across the cell membrane in urea solution

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