Vapor pressures of a substance at 100°F:

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Multiple Choice

Vapor pressures of a substance at 100°F:

Explanation:
Vapor pressure rises with temperature. As you heat a liquid, more molecules have enough energy to overcome the liquid’s surface forces and escape into the vapor, so the equilibrium vapor pressure increases. At 100°F, the vapor pressure is higher than at 68°F because the substance is warmer. This is a physical change of evaporation conditions, not a change in the substance’s chemical composition, so options claiming it stays the same, gets lower, or involves chemical change aren’t correct.

Vapor pressure rises with temperature. As you heat a liquid, more molecules have enough energy to overcome the liquid’s surface forces and escape into the vapor, so the equilibrium vapor pressure increases. At 100°F, the vapor pressure is higher than at 68°F because the substance is warmer. This is a physical change of evaporation conditions, not a change in the substance’s chemical composition, so options claiming it stays the same, gets lower, or involves chemical change aren’t correct.

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