Concept explainers
Interpretation:
The molar mass of an unknown gas when time taken by it and hydrogen gas to effuse is
Concept Introduction:
Graham’s law states that the rate of effusion of gases varies inversely to the square root of its molar mass. Mathematically it can be stated as follows:
Here,
Another relation that describes the rate of effusion in terms of the time required by a particular gas to effuse is given as follows:
Here,
Therefore the gases that have greater rates of effusion will require lesser time for effusion out of a hole compared to a gas that has smaller rates of effusion.
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Chemistry: Principles and Practice
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