The escape of gas molecules through a tiny hole into a vacuum is called:
ADiffusion
BConvection
CCondensation
DEffusion
Answer & Solution
Correct answer: D. Effusion
1. Two similar-sounding processes describe gas molecules moving.
2. A process involving movement of gaseous species similar to diffusion is effusion.
3. Effusion is the escape of gas molecules through a tiny hole, such as a pinhole in a balloon, into a vacuum.
4. Diffusion instead is spreading through another gas rather than escaping through a hole.
_Source: OpenStax Chemistry 2e (CC BY 4.0), Ch 9 'Gases', sections 9.1-9.6_
Related questions
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