🧪 Chemistry · States of Matter · NEET & JEE

Under identical conditions of temperature and pressure, the ratio of the rate of diffusion of CH4 to that of SO2 is:

Answer: 2 : 1.

A 1 : 2
B 4 : 1
C 2 : 1
D 1 : 4

Correct answer: C. 2 : 1

Explanation: By Graham's law rate is inversely proportional to sqrt(M). Rate(CH4)/Rate(SO2) = sqrt(64/16) = 2, so the ratio is 2 : 1.

Graph of pressure versus volume for a fixed amount of gas at constant temperature: the curve falls steeply then flattens, a hyperbola showing pressure inversely proportional to volume.

Boyle's law: at constant temperature the pressure of a fixed mass of gas is inversely proportional to its volume (P ∝ 1/V), so the P–V plot is a hyperbola — halving the volume doubles the pressure. Image: Reginaprice2013, CC BY-SA 3.0, via Wikimedia Commons.

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Discover why gases expand to fill any container while liquids flow and solids hold their shape. Master the gas laws, the ideal gas equation, and the reasons real gases deviate from ideal behavior.

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Under identical conditions of temperature and pressure, the ratio of the rate of diffusion of CH<sub>4</sub> to that of SO<sub>2</sub> is:

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