16.4 Exercise 37

What happens to $\Delta G$ (becomes more negative or more positive) for the following chemical reactions when the partial pressure of oxygen is increased?

(a) $\text{S} \left(s\right) + \text{O}_{2} \left(g\right) \rightarrow \text{SO}_{2} \left(g\right)$

(b) $\text{2SO}_{2} \left(g\right) + \text{O}_{2} \left(g\right) \rightarrow \text{2SO}_{3} \left(g\right)$

(c) $\text{HgO} \left(s\right) \rightarrow \text{Hg} \left(l\right) + \text{O}_{2} \left(g\right)$