alleryStart learning →Who studied the rates of effusion of different gases in 1832 and formulated the law relating rate to molar mass?
ARobert Boyle
BThomas Graham
CJohn Dalton
DJacques Charles
Answer & Solution
Correct answer: B. Thomas Graham
1. Thomas Graham measured how fast different gases escaped through small openings in 1832.
2. He found the rate falls as the square root of the molar mass rises, and the law now carries his name.
3. Dalton's contribution to gas mixtures was the law of partial pressures, which is about pressure rather than rate.
4. Boyle and Charles worked a century or more earlier, on volume against pressure and volume against temperature.
_Source: OpenStax Chemistry (CC BY 4.0), Ch 9 "Gases", section 9.4 Effusion and Diffusion of Gases_
Keep practising Gases
Browse all Gases questions for IMU CET, or explore more Chemistry topics.
Related questions
The van der Waals equation reduces to PV = nRT under which condition?A 4.25 L flask holds 3.46 mol of carbon dioxide at 229 degrees C. What pressure does the iIn the van der Waals equation, what does the constant b account for?Who developed the first and simplest equation that improves on the ideal gas law?Under which conditions does a real gas behave most nearly like an ideal gas?For a gas showing perfectly ideal behaviour, the compressibility factor Z takes which valuKinetic molecular theory explains Boyle's law by which change when the volume of a gas decAt a fixed temperature, how do lighter gas molecules compare with heavier ones?