Question:

In which of the following equilibria, Kp and Ke are NOT equal?

Updated On: Dec 4, 2024
  • PCl5(g) ⇌ PCl3(g) + Cl2(g)
  • H2(g)+I2(g) ⇌ 2HI(g)
  • CO(g) +H2O(g) ⇌ CO2(g) +H2(g)
  • 2BrCl(g) ⇌ Br2(g) + Cl2(g)
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The Correct Option is A

Solution and Explanation

- $K_p = K_c(RT)^{\Delta n}$, where $\Delta n = \text{moles of gas products} - \text{moles of gas reactants}$.
- For equilibrium (4), $\Delta n \neq 0$, hence $K_p \neq K_c$.

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