Which, if any, of the following processes is spontaneous under the specified conditions? $H_2O(l) \rightarrow H_2O(s)$ at $25^\circ C$ $CO_2(s) \rightarrow CO_2(g)$ at $0^\circ C$ $2H_2O(g) \rightarrow 2H_2(g) + O_2(g)$ $C(graphite) \rightarrow C(diamond)$ at $25^\circ C$ and 1 atm pressure None of these choices is spontaneous.
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Water freezes at $0^\circ C$. At $25^\circ C$, water is in liquid form. Therefore, the reverse process, $H_2O(s) \rightarrow H_2O(l)$, is spontaneous at $25^\circ C$. The given process is not spontaneous. Show more…
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