From Gas to Liquid
9 important questions on From Gas to Liquid
What are the different states of aggregations/phases?
Gas, liquid and solid.
By what properties is an ideal gas characterised?
- The gas molecules are infinitely small
- The gas molecules do not interact.
Why is the ideal gas law an equation of state?
The ideal gas law pV=nRT is an equation of state because it describes the relationship between parameters of a gas in a particular state.
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What is the compressibility factor?
Z= pV/nRT = pv/RT if 1 -> Ideal gas
Not 1? -> non-ideal
What is the virial expansion?
You try to get as close to the reals (non-ideal gas) by adding virial coëfficients. The coefficients only depent on text-decorationtemperature!!!!!!!
Due to dilution the influnce of higher power quantities is reduced.
What is the Boyle temperature?
B2 = 0. The second virial term in Z = 1 +B2(T)/v is 0 and the gas behaves as an ideal gas.
Why do ideal isotherms and the an der Waals isotherms intersect at relatively smalle values of v?
The repulsion dominates at small values of v and thervoor the van er Waals isotherm is located above the ideal gas isotherm (Z>1), but at larger v the attraction dominates ant the van der waals isother is located below the ideal isotherm (Z<1), At intersection (Z=1)
What is the Maxwell construction?
It is based on the fact that the arieas defined by the horizontal line and the parts of the loop above and below the horizontal line must be equeal as can be shown thermodynamically.
What is the master boiling curve?
For the reduced van der Waals equation ther is only one boiling curve. It contains information on alle boilingcurves that can be drwan ont the basisof the ....etc
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