Compare rate of diffusion of gases
Prerequisite Knowledge
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Rate of diffusion of a gas is inversely proportional to its relative molecular mass i.e. heavier gases diffuse slower that lighter gases.
Common mistake: in the calculation of relative molecular mass, students forget that some gases exist as diatomic molecules e.g. H2, O2, N2 etc (list of common diatomic molecules) -
Rate of diffusion of a gas is directly proportional to temperature i.e. gases diffuse faster at higher temperatures.
Question 01
The rate of diffusion of chlorine gas and carbon dioxide gas were compared at 25 °C and 40 °C.
Which would have the slowest rate of diffusion?
The rate of diffusion of chlorine gas and carbon dioxide gas were compared at 25 °C and 40 °C.
Which would have the slowest rate of diffusion?
Question 02
A beaker of nitrogen was inverted over a porous pot containing another gas as shown.
Which gas when present in the pot will cause the water level to rise at Y?
A beaker of nitrogen was inverted over a porous pot containing another gas as shown.
Which gas when present in the pot will cause the water level to rise at Y?
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