What is the ratio of to for the reaction ? — Chemical Equilibrium Chemistry Question
Question
What is the ratio of $K_p$ to $K_c$ for the reaction $CO(g) + \frac{1}{2}O_2(g) \rightleftharpoons CO_2(g)$?
Answer: B
💡 Solution & Explanation
The relationship between the equilibrium constants is $K_p = K_c(RT)^{\Delta n_g}$. For this reaction, the change in gaseous moles $\Delta n_g = (\text{moles of gaseous products}) - (\text{moles of gaseous reactants}) = 1 - (1 + 0.5) = -0.5$. Therefore, $K_p/K_c = (RT)^{-1/2}$.
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