The synthesis of water is described by the equation 2H2 + O2 + 2H20. How is the decomposition of water related to this reaction? A. It is the reverse of the synthesis equation.
B. It is the same as the synthesis equation.
C. The two reactions are not related.

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a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.