GKFix MCQ Question

Why is the comparison between observed and calculated E°(M2+/M) values useful?

• A. It is only useful for elements with positive E° values.
• B. It proves that thermochemical parameters are always accurate.
• C. It is not useful as calculations are always wrong.
• D. It helps identify the relative contributions and potential shortcomings of the thermochemical parameters used in the calculation.