Which of the following statements is NOT true? A) There is a dynamic equilibrium

Question

Which of the following statements is NOT true?

A) There is a dynamic equilibrium between the liquid and gas phases of a closed system such that molecules are continuously entering and leaving the liquid phase, but there is no net change in the amount of the chemical in the liquid and gas phases.

B) The vapor pressure of a chemical decreases with increasing temperature.

C) Chemicals in the gas phase experience effectively no intermolecular interactions.

D) At higher temperatures, the average kinetic energy of the molecules is greater.

Explanation / Answer

A) There is a dynamic equilibrium between the liquid and gas phases of a closed system such that molecules are continuously entering and leaving the liquid phase, but there is no net change in the amount of the chemical in the liquid and gas phases.TRUE, this is the definitoin of dynamic equilibrium

B) The vapor pressure of a chemical decreases with increasing temperature. FALSE, pressure increases ad T increas

C) Chemicals in the gas phase experience effectively no intermolecular interactions. FALSE, they do, just lower amount

D) At higher temperatures, the average kinetic energy of the molecules is greater. TRUE

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