In the reaction between co and fe3o4, the theoretical yield in an experiment is calculated to be 47.2 gfe. when a careless chemistry student carries out the experiment, the actual yield is 42.9 fe. calculatethe percentage yield.
a) 88.5%
b) 70.2%
c) 89.9%
d) 74.3%
e) 90.9%

Consider the reduction reactions and their equilibrium constants. cu+(aq)+e−↽−−⇀cu(s)pb2+(aq)+2e−↽−−⇀ pb(s)fe3+(aq)+3e−↽−−⇀fe(=6.2×108=4. 0×10−5=9.3×10−3 cu + ( aq ) + e − ↽ − − ⇀ cu ( s ) k =6.2× 10 8 pb 2 + ( aq ) +2 e − ↽ − − ⇀ pb ( s ) k =4.0× 10 − 5 fe 3 + ( aq ) +3 e − ↽ − − ⇀ fe ( s ) k =9.3× 10 − 3 arrange these ions from strongest to weakest oxidizing agent.