C-07-Q059mediumsingle_mcqThe reaction 2FeCl2+Cl2→2FeCl3\mathrm{2FeCl_2 + Cl_2 \to 2FeCl_3}2FeCl2+Cl2→2FeCl3 is an example of—adecompositionbaddition reactioncsubstitution reactiondneutralization