The reaction, MgO(s) + C(s) arrow Mg(S) + CO(g) , for which ΔrH° = + 491.1 kJ mol-1 and ΔrS° = 198.0 JK-1 mol- 1, is not feasible at 298 K. Temperature above which reaction will be feasible is :

Question

The reaction, MgO(s) + C(s) arrow Mg(S) + CO(g) , for which ΔrH° = + 491.1 kJ mol-1 and ΔrS° = 198.0 JK-1 mol- 1, is not feasible at 298 K. Temperature above which reaction will be feasible is : (A) 1890.0 K (B) 2480.3 K (C) 2040.5 K (D) 2380.5 K

Tardigrade Admin · Accepted Answer

Teq =(Δ H/Δ S) = (491.1 ×1000/198) = 2480.3 K

Q. The reaction, $M g O (s) + C (s) \to M g (S) + CO (g)$ , for which $Δ_{r} H^{\circ} = + 491.1 k J m o l^{- 1}$ and $Δ_{r} S^{\circ} = 198.0 J K^{- 1} m o l^{- 1}$ , is not feasible at $298 K$ . Temperature above which reaction will be feasible is :

$1890.0 K$

$2480.3 K$

$2040.5 K$

$2380.5 K$

$T_{e q} = \frac{Δ H}{Δ S}$
$= \frac{491.1 \times 1000}{198}$
$= 2480.3 K$

Q. The reaction, MgO(s)+C(s)→Mg(S)+CO(g) , for which Δr​H∘=+491.1kJmol−1 and Δr​S∘=198.0JK−1mol−1, is not feasible at 298K. Temperature above which reaction will be feasible is :

1890.0K

2480.3K

2040.5K

2380.5K