For the reaction: 2 A(g)+3 B(s)<==>2 C(g)+3 D(1) K_{p}=7.31 \times 10^{7} \text { at } 157.85^{\circ} \mathrm{C} \text { Calculate } \mathrm{K}_{c} \text { at } 157.85^{\circ} \mathrm{C} \text {

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