We are being asked to determine the osmotic pressure of blood at body temperature, 37 °C
The osmotic pressure (Π) of a solution is related to the molarity of the solution:
i = van’t Hoff factor
M = molarity of the solution (in M or mol/L)
R = gas constant (0.08206 atm • L/mol • K)
T = temperature
We are going to do the following steps:
Step 1: Calculate molarity of the solution
Step 2: Calculate osmotic pressure
Intravenous or IV solutions used in medicine must exert the same osmotic pressure as blood to prevent a net flow of water into or out of the blood cells. The proper concentration for an intravenous NaCl solution is 0.90 g NaCl per 100. mL of water (sometimes referred to as 0.90% m/v). If the van't Hoff factor of NaCl is i = 1.8, what is the osmotic pressure of blood at body temperature, 37°C
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