(b) $2A(g) \rightleftharpoons 3C(g) + D(s)$ For this reaction, $\mathrm{\Delta}n_{g} = 3 - 2 = 1$ $\therefore$ $K_{p} = K_{c}(RT)^{1}$ or $K_{c} = \frac{K_{p}}{RT}$
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Ph.D. in Physics with 19+ years of teaching experience.