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AP Chemistry
9.1 Introduction to Entropy
BeginnerMCQDrawing RepresentationsConceptual17.3k
Particulate representation of gas expansion before and after opening the valve.
Particulate representation of gas expansion before and after opening the valve.
A student sets up an experiment using two rigid glass bulbs of equal volume connected by a valve, as represented in the particulate diagram. Initially, Bulb 1 contains a gas sample at a constant temperature of 298 K, and Bulb 2 is evacuated. After the valve is opened, the gas expands isothermally until it is evenly distributed across both bulbs. Which of the following best explains why \(\Delta S > 0\) for this process based on the particulate representation?

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