Combustion reactions: A reaction in which hydrocarbon (compound containing only carbon and hydrogen) or C,H,O compound is reacted with elemental oxygen (O2) to form carbon dioxide and water
A) Fe2O3(s) + 3CO(g) -> 2Fe(s) + 3CO2(g)
B) 2H2(g) + O2(g) -> 2H2O(l)
C) 2HgO(s) -> 2Hg(l) + O2(g)
D) CH4(g) + 2O2(g) -> CO2(g) + 2H2O(g)