(a) Use standard potentials to calculate the standard potential of the disproportionation of H₂O₂ in acid solution. 

(b) Is Cr²⁺ a likely catalyst for the disproportionation of H₂O₂? 

(c) Given the Latimer diagram

in acidic solution, calculate Δ_rG^⊖ for the disproportionation of hydrogen superoxide (HO₂) into O₂ and H₂O₂, and compare the result with its value for the disproportionation of H₂O₂.

Transcribed Image Text:

0₂ 0.13 →HO₂- +1.44 →H₂O₂