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Chemistry LibreTexts

10.4.1: Practice Equilibrium Constants

  • Page ID
    236060
  • Exercise \(\PageIndex{1}\)

    \[3 H_{2 (g)} + N_{2 (g)} \longleftrightarrow 2 NH_{3 (g)}\]

    What is the equilibrium constant expression of the reaction above?

    Answer

    \(K_{eq} = \dfrac{[NH_{3}]^{2}}{[H_{2}]^{3}[N_{2}]}\)

    Exercise \(\PageIndex{1}\)

    \[2 SO_{2 (g)} + O_{2 (g)} \longleftrightarrow 2 SO_{3 (g)}\]

    The Keq of the reaction above is 3.4 x 102.  Is the equilibrium mixture mostly SO2 and O2 or mostly SO3?

    Answer

    mostly SO3

    Exercise \(\PageIndex{1}\)

    \[C_{(s)} + 2 S_{(g)} \longleftrightarrow CS_{2 (g)}\]

    What is the equilibrium constant expression of the reaction above?

    Answer

    \(K_{eq} = \dfrac{[CS_{2}]}{[S]^{2}}\)

    Exercise \(\PageIndex{1}\)

    \[Pb^{2+}_{(aq)} + 2 Cl^{1–}_{(aq)} \longleftrightarrow PbCl_{2 (s)}\]

    What is the equilibrium constant expression of the reaction above?

    Answer

    \(K_{eq} = \dfrac{1}{[Pb^{2+}][Cl^{1–}]^{2}}\)

     

     

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