Fresh water can be squeezed out of seawater through a semipermeable membrane by using a piston to raise the pressure on the

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Fresh water can be squeezed out of seawater through a semipermeable membrane by using a piston to raise the pressure on the seawater side of the membrane to a value larger than the osmotic pressure To achieve a sufficient flow of fresh water the operating pressure is typically twice the osmotic pressure The membrane has to be able to withstand this pressure difference and also not become clogged too rapidly with any sediment or microorganisms that are too small to be filtered out of the seawater The density of seawater is 1030 kg m and a typical salinity is 3 5 NaCl by weight Note that 1 mol of NaCl dissociates to 2 mol of solute particles in solution Assume that the temperature is 20 C Part A What operating pressure in atm is needed by a reverse osmosis systen Express your answer in atmospheres VAXO II Submit Previous Answers Request Answer atm

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