Desalination of seawater by reverse osmosis requires application of pressure greater than the osmotic pressure of a 6.2 solution at 25°C? (assume the van't Hoff factor i = 2 and R = 0.0826 L⋅atm/mol⋅K)

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The osmotic pressure of a 6.2 M solution at 25°C is:π = iMRT = 2 * 6.2 M * 0.0826 L⋅atm/mol⋅K * 298 K = 310 atmTherefore, the pressure required for desalination by reverse osmosis must be greater than 310 atm.

Desalination of Seawater by Reverse Osmosis Requires Application of Pressure