Question

The osmotic pressure of human blood is 7.6 atm at 37 °C. What mass of glucose, C₆H₁₂O₆, is required to make 1.00 L of aqueous solution for intravenous feeding if the solution must have the same osmotic pressure as blood at body temperature, 37 °C?

Answer 1

$\Pi=iCRT$

$\Pi=7.6atm,i=1,R=0.08210L\>atm/(mol\>K)$

$T=273+37=310K$

Molar concentration (C)$=\frac{7.6}{0.08210×310}$

$=0.29898M$

Molar mass of Glucose $=180g$

Mass of glucose $=180×0.29898$

$=53.8164g$