Moist hydrogen reacts with chlorine in diffused sunlight to give out hydrogen chloride. Why is moist hydrogen used? Why not dry hydrogen?
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$\begingroup$ The choice of moist rather than dry hydrogen seems to be driven by some external circumstances of which we have no idea. Dry hydrogen would react just as well. $\endgroup$ – Ivan Neretin Dec 27 '17 at 14:37
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$\begingroup$ The reaction is explosive in direct sunlight. Water acts as a catalyst. $\endgroup$ – MaxW Dec 27 '17 at 16:36
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$\begingroup$ Nice video of UV setting off the reacti0n at youtube.com/watch?v=NN82GoBG98s $\endgroup$ – DrMoishe Pippik Dec 27 '17 at 23:58
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H2O has h ions so it adds more + ions so that the cl- gets reacted faster towards the H+ ions so water is a catalysts or booster I hope u understnd
