GEN CHEM 134 EXAM 3 QUESTIONS WITH COMPLETE
SOLUTIONS
kinetic molecular theory of gas Ans✓✓✓ series of assumptions that
aren't 100 percent true
postulates Ans✓✓✓ taken as a statement of fact
List postulates Ans✓✓✓ 1.gas more in straight line fashion
2. collisions are elastic
3.molecules have no intramolecular attractive forces
4.volume of molecules or atom is negligible
5. kinetic energy is related to absolute temp
6. pressure is related to force of molecules on the walls of the container
Vmp (most propable) Ans✓✓✓ square root 2xRxT/Molecular weight
Vave (average) Ans✓✓✓ square root 8xRxT/pie x molecular weight
Vrms (root mean square) Ans✓✓✓ square root 3xRxT/molecular weight
rank speed Ans✓✓✓ Vrms > Vave > Vmp
Van der Waals Ans✓✓✓ (P+an^2/V^2)(V-nb)=nRT
, Heat equation Ans✓✓✓ q=Cs x m x delta T
Linear Clausius Ans✓✓✓ InP= -deltaHvap/R (1/T) + I
Two point formula Ans✓✓✓ InP2/P1= delta Hvap (1/T1 - 1/T2)
Heat vaporization Ans✓✓✓ heat needed to vaporize 1 mol of substance
vapor pressure Ans✓✓✓ pressure of liquid gone into gas phase
boiling point Ans✓✓✓ temp which vaporization pressure is equal to
applied pressure
heat vaporization Ans✓✓✓ heat need to vaporize per 1 mol
Heat of fusion Ans✓✓✓ heat need to fuse per 1 mol
heat of sublimation Ans✓✓✓ heat need to sublimate per 1 mole
viscosity Ans✓✓✓ measure of resistance to flow
SOLUTIONS
kinetic molecular theory of gas Ans✓✓✓ series of assumptions that
aren't 100 percent true
postulates Ans✓✓✓ taken as a statement of fact
List postulates Ans✓✓✓ 1.gas more in straight line fashion
2. collisions are elastic
3.molecules have no intramolecular attractive forces
4.volume of molecules or atom is negligible
5. kinetic energy is related to absolute temp
6. pressure is related to force of molecules on the walls of the container
Vmp (most propable) Ans✓✓✓ square root 2xRxT/Molecular weight
Vave (average) Ans✓✓✓ square root 8xRxT/pie x molecular weight
Vrms (root mean square) Ans✓✓✓ square root 3xRxT/molecular weight
rank speed Ans✓✓✓ Vrms > Vave > Vmp
Van der Waals Ans✓✓✓ (P+an^2/V^2)(V-nb)=nRT
, Heat equation Ans✓✓✓ q=Cs x m x delta T
Linear Clausius Ans✓✓✓ InP= -deltaHvap/R (1/T) + I
Two point formula Ans✓✓✓ InP2/P1= delta Hvap (1/T1 - 1/T2)
Heat vaporization Ans✓✓✓ heat needed to vaporize 1 mol of substance
vapor pressure Ans✓✓✓ pressure of liquid gone into gas phase
boiling point Ans✓✓✓ temp which vaporization pressure is equal to
applied pressure
heat vaporization Ans✓✓✓ heat need to vaporize per 1 mol
Heat of fusion Ans✓✓✓ heat need to fuse per 1 mol
heat of sublimation Ans✓✓✓ heat need to sublimate per 1 mole
viscosity Ans✓✓✓ measure of resistance to flow
