Consider the following reactions at 1100° C (I) 2 C + O 2 longrightarrow 2 CO , Δ G°=-460 kJ mol -1 (II) 2 Zn + O 2 longrightarrow 2 ZnO Δ G°=-360 kJ mol -1 Based on these, select correct alternate :

Question

Consider the following reactions at 1100° C (I) 2 C + O 2 longrightarrow 2 CO , Δ G°=-460 kJ mol -1 (II) 2 Zn + O 2 longrightarrow 2 ZnO Δ G°=-360 kJ mol -1 Based on these, select correct alternate : (A) zinc can be oxidised by CO (B) zinc oxide can be reduced by carbon (C) both (a) and (b) (D) none is the correct

Tardigrade Admin · Accepted Answer

ZnO + C arrow Zn + CO, Δ G° = -ve. Hence, this is spontaneous.

Q. Consider the following reactions at $110 0^{\circ} C$
(I) $2 C + O_{2} ⟶ 2 CO, Δ G^{\circ} = - 460 k J m o l^{- 1}$
(II) $2 Z n + O_{2} ⟶ 2 Z n O$
$Δ G^{\circ} = - 360 k J m o l^{- 1}$
Based on these, select correct alternate :

zinc can be oxidised by $CO$

zinc oxide can be reduced by carbon

both (a) and (b)

none is the correct

$Z n O + C \to Z n + CO, Δ G^{\circ} = - v e$ .

Hence, this is spontaneous.

Q. Consider the following reactions at 1100∘C (I)2C+O2​⟶2CO,ΔG∘=−460kJmol−1 (II) 2Zn+O2​⟶2ZnO ΔG∘=−360kJmol−1 Based on these, select correct alternate :

zinc can be oxidised by CO