Skip to content

Help Zone

Student Question

Secondary V • 2yr.

Based on the molar mass of a gas, what can I say about its speed of diffusion? 

thank you


{t c="richEditor.description.title"} {t c="richEditor.description.paragraphMenu"} {t c="richEditor.description.inlineMenu"} {t c="richEditor.description.embed"}

Explanations (1)

  • Explanation from Alloprof

    Explanation from Alloprof

    This Explanation was submitted by a member of the Alloprof team.

    Team Alloprof • 2yr.

    Hello NaiveAbafar3712, 

    That's a great question; let's look into it.

    The speed of diffusion and the molar mass of gas is proportional. In other words, the lighter the gas, the faster it diffuses. Plus, the heavier the gas, the slower it diffuses. 

    Therefore, ammoniac (molar mass = 17,04 g/mol) diffuses faster than hydrochloric acid (molar mass = 36,46 g/mol). 

    Hopefully, that helps! 

    If you have other questions, you know where to find us! 


Ask a question