Q.
Electrode potential data are given below Fe3+(aq)++e−Fe2+(aq)E∘=+0.77VAl3+(aq)+3e−Al(s)E∘=−1.66VBr2(aq)+2e−2Br−(aq)E∘=+1.08V Based on the data given above, reducing power of Fe2+,Al and Br−, will increase, in the order
Reducing power ie, the tendency to lose electrons increases as the reduction potential decreases so the increasing order of reducing power of the given ions is Br−<Fe2+<Al .