How many moles of hydrogen gas can be produced if 0.57 moles of hydrochloric acid, HC1, reacts with excess solid zinc according to the following chemical equation? 2 HC1 + Zn → H2 + ZnCl2

98

Explanation:

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.