Which of the following statements are true and supported by kinetic molecular theory?
I. Ideal gas behavior is better achieved at low pressure and high temperature.
II. The kinetic energy of a molecule is directly proportional to its temperature.
III. Instantaneous dipoles are most prominent in gases that are non-polar.
IV. As the temperature of a gas increases, the system pressure decreases.

Question

15-10-2019
Physics

contestada

Which of the following statements are true and supported by kinetic molecular theory?
I. Ideal gas behavior is better achieved at low pressure and high temperature.
II. The kinetic energy of a molecule is directly proportional to its temperature.
III. Instantaneous dipoles are most prominent in gases that are non-polar.
IV. As the temperature of a gas increases, the system pressure decreases.

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Manetho Manetho · Answer 1 · 2019-10-16T12:15:18+02:00

Answer:

I,II, III are true

Explanation:

1. Yes

low pressure reduces the inter molecular attraction force and cause non-ideality

at high temperature frequency of collision is increase that causes loss of energy.

2. yes

[tex]v_{rms}=\sqrt{\frac{2RT}{M} }[/tex]

T is temperature , more the T more will be the velocity of molecules and hence more kinetic energy.

3. Yes

Polar gases contain stronger inter molecular forces from reliable, measurable partial charges, which implies that they are more permanent, long-lasting, and therefore more prominent forces.

4. No

higher the temperature higher will be the pressure as the frequency of collision will increase and thus increasing the pressure.