Academic help online

Posted on October 24, 2016

Academic help online
A 20-liter piston–cylinder assembly consists of 80% liquid H2O and 20% vapor H2O by mass at 111.4°C and 1.5 bar. A pin is placed on the piston to prevent its motion. Gaseous nitrogen is isothermally injected into the volume until the pressure reaches 2 bar.
a. What is the nitrogen mole fraction in the gas phase? Assume that N2 does not dissolve in the liquid.
b. What happens if there is no pin during the injection of N2.
c. Instead of adding N2, discuss the effects with salt addition at 111.4°C.

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