The following reaction was described as the cause of sulfur deposits formed at volcanic sites (see p. 780):
2H2S(g) + SO2(g) ⇌ 3S(s) + 2H2O(g)
It may also be used to remove SO2 from power plant stack gases.
(a) Identify the type of redox reaction it is.
(b) Calculate the equilibrium constant (KP) at 25°C and comment on whether this method is feasible for removing SO2.
(c) Would this procedure become more or less effective at a higher temperature?