The osmotic pressure of blood is 7.47 bar at 300 K. To inject glucose to a patient intravenously, it has to be isotonic with blood. What is the concentration of glucose solution? (Molar mass of glucose = 180 g/mol, R = 0.083 L bar /K mol.)

54 g/L 55 g/L 45 g/L 18 g/L

54 g/L

π = cRT 7.47 = c x 0.083 x 300 c = \(\frac{7.47}{0.083 × 300}\) c = 0.3 mol/L In terms of g/L = 0.3 x 180 = 54 g/L