3. The dissolution of NaCl has a standard enthalpy of +3.87 kJmol-1 at 25.0ºC and 1bar. Salt water has 35g/kg salt, and the heatcapacity of sea water is 3993 J kg−1 K−1 at 25.0ºC.
a. (20 pts) How much would water heat up or cool down by addingenough NaCl to make sea water? b. (20 pts) How much heat would bereleased by making 1.00kg of sea water?
c. (20 pts) Assuming that 1.00kg of sea water equals 1.00L involume, how much osmotic work would be required to pump this waterto a final salt concentration of 10mM at 25.0ºC?
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