Apentix/AP Chemistry/Unit 3: Intermolecular Forces and Properties/Question

AP Chemistryeasymcq1 pt

Why does the solubility of a gas in water decrease as temperature increases?

A.Gas molecules gain enough kinetic energy to escape the liquid

B.Water's volume expands and squeezes the gas out

C.Gases react with water at high temperature

D.Water molecules stop hydrogen bonding

Explanation

Core Concept

Dissolved gas molecules vibrate faster at higher temperature and can overcome their solvation to re-enter the gas phase. Warm soda going flat is the everyday demonstration.

Correct Answer

AGas molecules gain enough kinetic energy to escape the liquid

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