The purpose of CH1O2 is to: a. keep students busy when they could be napping.
b. follow the content of the lecture course on a day-to-day basis.
c. explore some basic chemical concepts.
d. provide a lab grade for inclusion in the CH101 lecture course.
e. reinforce the content of CH101 with hands-on experience.

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.