alleryStart learning →The rate of diffusion of a gas depends on which set of factors?
AConcentration gradient, area and distance
BMolar mass, colour and boiling point
CContainer shape, colour and pressure
DBond strength, area and molar volume
Answer & Solution
Correct answer: A. Concentration gradient, area and distance
1. The rate of diffusion is the amount of gas passing through an area in a given time.
2. A steeper concentration gradient drives a faster net flow.
3. A larger surface area available for diffusion lets more gas through at once.
4. A longer distance for the particles to travel slows the process down.
5. The time needed for diffusion is inversely proportional to the rate, so a faster rate always means a shorter time.
_Source: OpenStax Chemistry (CC BY 4.0), Ch 9 "Gases", section 9.4 Effusion and Diffusion of Gases_
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