Question

Explane role of
CO in mond process

Answer 1

. The impure nickel is reacted with excess carbon monoxide at 5060C to form the gas nickel carbonyl, leaving the impurities as solids.

Ni (s) + 4 CO (g) → Ni(CO)4 (g)

Answer 2

In the Mond process for the purification of nickel, CO is passedover metallic nickel to give Ni(CO)4.

Ni(s) + 4 CO(g) Ni(CO)4(g)

Given that the standard free energies of formation ofCO(g) and Ni(CO)4(g) are -137.3 kJ/moland -587.4 kJ/mol, respectively, calculate the equilibrium constantof the reaction at 80°C. (Assume Gf° to be independent of temperature.)