1.
In the following reactions, identify P, Q and R, respectively I. 3Fe2_2O3_3 + CO \rightarrow 2P + CO2_2 II. Fe3_3O4_4 + 4CO \rightarrow 3Q + 4CO2_2 III. Fe2_2O3_3 + CO \rightarrow 2R + CO2_2