Standard entropies of $X_2$, $Y_2$ and $XY_3$ are $60, 40$ and $50 JK ^{–1} mol^{–1}$ respectively. For the reaction $\frac{1}{2} X_2 +\frac{3}{2}Y_2 \leftrightharpoons XY_3, \Delta H = -30 kJ$ to be at 2 equilibrium, the temperature should be:

Question

( A ) 500 K
( B ) 1000 K
( C ) 1250 K
( D ) 750 K