Kinetic Molecular Theory of Gases

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What is the total number of degrees of freedom for a diatomic molecule that can rotate and vibrate?

8

7 (correct)

6

5

What is the shape of the velocity distribution curve for a gas at a particular temperature?

Linear

Uniform

Parabolic

Maxima at most probable speed (correct)

What is the effect of temperature on the kinetic energy per molecule of a gas?

It increases with increase in temperature (correct)

It remains constant with temperature

It decreases with increase in temperature

It depends on the mass of the molecule

What is the number of independent motions possible for a monoatomic gas molecule?

3 Signup and view all the answers

What is the number of degrees of freedom for a triatomic non-linear molecule?

6 Signup and view all the answers

What is the degree of freedom for an atom in a solid?

6 for vibration Signup and view all the answers

What is the relation between the molar specific heat at constant pressure (C_P) and that at constant volume (C_V)?

C_P > C_V Signup and view all the answers

What is the ratio of rms, average, and most probable velocities in a gas?

3 : 2.5 : 2 Signup and view all the answers

What is the value of γ (gamma) for a monoatomic gas?

1.6 Signup and view all the answers

What is the characteristic of the specific heat of a gas?

It is always more than 1 Signup and view all the answers

What is the total number of degrees of freedom of a polyatomic molecule?

6 + fvib Signup and view all the answers

What happens to the pressure of a saturated vapour when the volume is changed at constant temperature?

It remains constant Signup and view all the answers

Which of the following statements is true for a diatomic gas?

It behaves as a monoatomic gas at very low temperature Signup and view all the answers

What is the effect of increasing the number of molecules in a gas at constant temperature?

The kinetic energy and pressure increase Signup and view all the answers

What is the correct expression for the effective volume of a real gas?

V - b Signup and view all the answers

What is the change in momentum of the wall A when a molecule collides with it?

2mvx Signup and view all the answers

What is the critical pressure of O2?

49.7 atm Signup and view all the answers

What is the relation between the critical temperature, critical pressure, and critical volume of a gas?

Vc = 3b Signup and view all the answers

What is the force exerted by a single molecule on the wall?

2mvx / Δt Signup and view all the answers

What is the velocity of a molecule in terms of its components?

v = √(vx^2 + vy^2 + vz^2) Signup and view all the answers

What is the relation between the pressure of an ideal gas and the mean kinetic energy of translation per unit volume of the gas?

The pressure is numerically equal to two thirds of the mean kinetic energy of translation per unit volume of the gas Signup and view all the answers

What happens to the pressure of a gas when the mass of the gas is increased at constant volume and temperature?

The pressure increases Signup and view all the answers

What is the relation between the pressure of a gas and the root mean square velocity of the gas molecules?

The pressure is proportional to the square of the root mean square velocity Signup and view all the answers

What happens to the pressure of a gas when the temperature of the gas is increased at constant volume?

The pressure increases Signup and view all the answers

What is the relation between the pressure of a gas and the velocity of the gas molecules?

The pressure is proportional to the square of the velocity of the gas molecules Signup and view all the answers

What is the relation between the rate of diffusion of a gas and its density?

The rate of diffusion is inversely proportional to the square root of the density of the gas Signup and view all the answers

What is the graphical representation of Gay-Lussac's law?

A straight line with a positive slope Signup and view all the answers

What is the total pressure exerted by a mixture of non-reacting gases occupying a vessel?

The sum of the individual pressures of each gas Signup and view all the answers

What is the relation between the volume and temperature of a gas at constant pressure?

The volume increases with an increase in temperature Signup and view all the answers

What is the formula for the relation between the rate of diffusion of two gases?

r1/r2 = √(M2/M1) Signup and view all the answers