5. tree sap can be a very concentrated solution of solutes in water. these are mostly sugars, with van’t hoff factors of 1. the root system provides a semi-permeable membrane across which water moves to “dilute” the sap, providing a significant osmotic pressure.
a. if a tree sap has an effective concentration of 37 molar, what pressure is generate at 298k across the endodermis root membrane? r = 0.08216 l. atm/mol. k.
b. if an osmotic pressure of 1.0 atm can raise a volume of water 10.33 meters high, how high can the sap of this tree rise?