Osmotic Pressure
Calculate the osmotic pressure of a solution with the van 't Hoff equation, free online.
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Osmotic pressure π = i·M·R·T, where i is the van 't Hoff factor (1 for glucose, about 2 for NaCl), M the molarity, R = 0.082057 L·atm/(mol·K) and T the absolute temperature. Blood plasma has an osmotic pressure of roughly 7.7 atm.