Tin(IV) oxide can be reacted with either hydrogen or carbon to form tin and water vapor or carbon dioxide, respectively. See Appendix C for data.
a. Calculate
∆Ho and
∆So at 25oC for the reaction of SnO2 with H2 and for the reaction of SnO2 with C.
b. At what temperature will each of these processes become spontaneous?
c. Industrially, which process is preferred? Why?