Problem- Using a table of standard reduction potentials determine the best answer to the following questions
1. Which of the following reagents would oxidize Cr to Cr^3 but not Pb to Pb^2
Br-, Br2, Co,Ca^2+, Co^2+, or Ca?
2. Which would oxidize I^- to I 2 but not Au to Au^+3
Ca^2+, Ca, Co^2+, Br^2, Br^-, or Co?
I require skilled aid to answer the given problem