STD 11 - 3. Classification of elements and periodicity in properties — NEET STD 11 Science — Question

$MgO(s) + C(s) \to Mg(s) + CO(g)$, for which $\Delta _r{H^o} =  + 491.1\,kJ\,mo{l^{ - 1}}$ and $\Delta _r{S^o} =  198.0\,Jk^{-1}\,mo{l^{ - 1}}$ is not feasible at $298\, K$. Temperature above which reaction will be feasible is.....$K$