Answer to Question #68619 in Physical Chemistry for james

Question

Which of the followings does not influence the magnitude of surface tension?
Metallic bonding
Hydrogen bonds
Ionic bonding
Dispersion forces
Question 20 : Which one of the following statements is not consistent with the kinetic-molecular theory of gases?
Individual gas molecules are relatively far apart.
There is no net gain or loss of the total kinetic (translational) energy in collisions between gas molecules.
The actual volume of the gas molecules themselves is very small compared to the volume occupied by the gas at ordinary temperatures and pressures.
The average kinetic energies of different gases are different at the same temperature.

Answer 1

The magnitude of surface tension is affected by hydrogen, metal, and dispersion bonds. In this case, the intermolecular forces vary greatly, and, consequently, the value of the surface tension also changes.
So, the ionic forces do not affect the magnitude of the surface tension.

Question 20:
At the same temperature, the average kinetic energy of different gases is the same, but not different.
Answer: Ionic bonding;
The average kinetic energies of different gases are different at the same temperature.