Coast Guard Exams
Question 1364Deck General70% to pass

The vapor pressure of a substance _______________.

AI Explanation
The correct answer is B) increases with the temperature. The vapor pressure of a substance is the pressure exerted by the vapor of that substance in equilibrium with its liquid or solid state at a given temperature. As the temperature increases, the molecules in the liquid or solid state gain more kinetic energy, allowing more of them to escape into the vapor phase. This increases the vapor pressure of the substance. The other options are incorrect because: A) Vapor pressure is directly affected by temperature. C) Vapor pressure only increases as temperature rises, it does not decrease. D) Vapor pressure increases, not decreases, with increasing temperature.

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