User: What type of reaction is H2 O2 = H2O and why?

Weegy: gases usually have more entropy than liquids, & both of them usually have more entropy than solids least entropy would be the liquid... [ H2O of the 2 gases, the more massive one usually has more entropy so H2(g) would have more entropy than H2) (l) but O2(g) should have the most entropy ]
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