QuestionGaseous state / Graham's law
Hydrogen molecule (H₂) with molar mass 2 g mol⁻¹ effuses through a small hole at a temperature of 300 K and pressure of 5 torr. Under the same conditions, methane (CH₄) with molar mass 16 g mol⁻¹ is also allowed to effuse. The ratio of the rate of effusion of hydrogen (r_{H₂}) and methane (r_{CH₄}) is
- (a) 2·828 : 1
- (b) 1 : 2·828
- (c) 1 : 8
- (d) 8 : 1
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