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Concentration of a solution isotonic with blood or a living cell

This type of question, asked 2 times: 14 Jun 2022, 21 Jan 2026 S2. All 2 questions below, oldest first.

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  1. Question 1

    14 Jun 2022

    53
    The osmotic pressure of blood is 7.47 bar at 300 K300\text{ }K. To inject glucose to a patient intravenously, it has to be isotonic with blood. The concentration of glucose solution in g L−1g\ L^{-1} is (Molar mass of glucose =180 g mol−1= 180\text{ }g\text{ }mol^{-1}, R=0.083 L bar K−1 mol−1R = 0.083\text{ }L\ bar\ K^{-1}\text{ }mol^{-1}) (Nearest integer)

  2. Question 2

    21 Jan 2026 S2

    47
    The osmotic pressure of a living cell in 12 atm at 300 K . The strength of sodium chloride solution that is isotonic with the living cell at this temperature is ____\_\_\_\_ gL−1gL^{- 1}. (Nearest integer) Given : R=0.08 L atm K−1 mol−1R = 0.08\text{ }L\text{ }atm{\text{ }K}^{- 1}{\text{ }mol}^{- 1} Assume complete dissociation of NaCl (Given : Molar mass of Na and Cl are 23 and 35.5 gmol−1g{mol}^{- 1} respectively.)