What Causes the Color of Hydrogen Gas?

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The murky grey-white color of hydrogen gas produced in the discussed reaction is likely due to water vapor generated from the heat of the reaction. This explanation aligns with the understanding that hydrogen gas itself is colorless, and the visible coloration is a result of the presence of water vapor.
papernuke
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My guess would be that it's water vapor created from the heat of the reaction.
 
Nessdude14 said:
My guess would be that it's water vapor created from the heat of the reaction.

Oh yeah, makes sense.
Thanks!
 
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