Question

Consider the following reactions at 1100°C

(I) 2C + O₂ →2CO;ΔG°=- 460 kJ mol^-1

(II) 2Zn+ O₂ → 2ZnO, ΔG° =- 360 kJ mol^-1  

Based on these, select correct alternative.

(a) zinc can be oxidised by CO

(b) zinc oxide can be reduced by carbon

(c) Both (a) and (b)

(d) None of the above

Answer 1

Correct option(b) zinc oxide can be reduced by carbon

Explanation:

ZnO + C→ Zn +CO,

ΔG°= -ve

Hence, this is spontaneous.