Consider the following intermediate chemical equations.
C($)+202(g) → CO(g)
CO(g)+201(9) CO29)
How will oxygen appear in the final chemical equation?
O2(g) as a product
O2(g) as a reactant
O(g) as a product
20(g) as a reactant

plasma - state of matter made up of electrically charged particles

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.