<prompt> Osmotic pressure of 1 mol of ideal solute relative to pure water is:2.5 atm5.2 atm22.4 atm15.2 atm  <response>: 1 mol of an ideal solute dissolved in 1000g of water a 1m or molal solution at 1 atm pressure yield a solution whose osmotic pressure relative to pure water is 22.4atm 250C. Ref: Principles of Medical Physiology by Sabyasachi Sircar, 20082-22 