For a chemical reaction A + B ⇌ C + D

(${\Delta _r}{H^\Theta }$ = 80 kJ mol^$-$1) the entropy change ${\Delta _r}{S^\Theta }$ depends on the temperature T (in K) as ${\Delta _r}{S^\Theta }$ = 2T (J K^$-$1mol^$-$1).

Minimum temperature at which it will become spontaneous is ___________ K. (Integer)