Chemistry 9701 · AS & A Level · Equilibria

Equilibria — practice question

For the reaction shown, the equilibrium constant, $K_c$, is $2\,\text{mol}^{-2}\text{dm}^6$ at $600\,\text{K}$. $\text{N}_2\text{(g)} + 3\text{H}_2\text{(g)} \rightleftharpoons 2\text{NH}_3\text{(g)}$ Calculate the equilibrium concentration of $\text{NH}_3$ at $600\,\text{K}$ if the equilibrium concentrations of $\text{N}_2$ and $\text{H}_2$ are each $2\,\text{mol dm}^{-3}$?

  • A$\sqrt{8}\,\text{mol dm}^{-3}$
  • B$\sqrt{16}\,\text{mol dm}^{-3}$
  • C$\sqrt{32}\,\text{mol dm}^{-3}$
  • D$32\,\text{mol dm}^{-3}$

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