Question

Which is a better reducing agent at 710°C, C or CO?

Answer 1

1. At 710°C (983 K), CO is a better reducing agent than C because CO oxidizes to CO₂ more easily below 983 K.
2. Above 983 K, C becomes a better reducing agent as its oxidation to CO₂ is more favorable thermodynamically.
3. Therefore, at 710°C (close to 983 K), CO is a better reducing agent than C.
4. This is explained using Ellingham diagrams showing the relative stability of CO and C oxidation products with metal oxides at various temperatures.

Hence, CO is the better reducing agent at 710°C.