Graham's Law

[HowAboutDAT]

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Just to clarify something I think I wrote down incorrectly in my notes, it applies to Graham's Law. The smaller a molecule of gas is, the faster it travels, correct? So for example when comparing the rate of effusion of CO2 and SO2, CO2 would effuse quicker because its smaller, and thus faster, correct?

 

[russiagirl]

Just to clarify something I think I wrote down incorrectly in my notes, it applies to Graham's Law. The smaller a molecule of gas is, the faster it travels, correct? So for example when comparing the rate of effusion of CO2 and SO2, CO2 would effuse quicker because its smaller, and thus faster, correct?

Yes, that's right. lighter gas molecules=faster rate. Heavier gas molecules=slower rate. "The rates at which two gases diffuse are inversely proportional to the square root of their molar masses". Hope that helps!