At what pressure does hydrogen diffuse downward?
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Senior, I have a beginner’s question: In a vertical pipe filled with hydrogen gas in its middle, with an opening at the bottom (at 1 atmosphere pressure), what pressure is needed at the top to make the hydrogen gas move downward? Thank you!
As long as there is a gap, molecular movement occurs and hydrogen moves downward
That’s it – slight positive pressure, moving downward
Is it necessary to overcome the buoyancy of hydrogen? Is the buoyant force very small, so it can’t be calculated: L