Consider the following reduction potentials:
Co3+ + 3e– → Co ϐo = 1.26 V
Co2+ + 2e– → Co ϐo = 20.28 V
a. When cobalt metal dissolves in 1.0 M nitric acid, will Co3+ or Co2+ be the primary product (assuming standard conditions)?
b. Is it possible to change the concentration of HNO3 to get a different result in part a?