\(A_{(g)} \rightleftharpoons B_{(g)}+\frac{C}{2}(g)\)

\(t=t_{e q}(1-\alpha) \quad \alpha \quad \frac{\alpha}{2}\)

\(\mathrm{P}_{\mathrm{B}}=\frac{\alpha}{\left(1+\frac{\alpha}{2}\right)} . \mathrm{P}, \mathrm{P}_{\mathrm{A}}=\frac{(1-\alpha)}{\left(1+\frac{\alpha}{2}\right)} \cdot \mathrm{P}, \mathrm{P}_{\mathrm{C}}=\frac{\frac{\alpha}{2}}{\left(1+\frac{\alpha}{2}\right)} \cdot \mathrm{P}\)

\(K_P=\frac{P_B \cdot P_C^{\frac{1}{2}}}{P_A}\)

\(=\frac{(\alpha)^{\frac{3}{2}}(P)^{\frac{1}{2}}}{(1-\alpha)(2+\alpha)^{\frac{1}{2}}}\)