The elementary reaction 2 H 2 O ( g ) − ⇀ ↽ − 2 H 2 ( g ) + O 2 ( g ) proceeds at a certain temperature until the partial pressures of H 2 O , H 2 , and O 2 reach 0.025 atm, 0.0060 atm, and 0.0090 atm, respectively at equilibrium. What is the value of the equilibrium constant at this temperature?

Respuesta :

Answer:

The value of equilibrium constant = 0.005184

Explanation:

          According to the given reaction we consider Kp equation and find the value of equilibrium constant using partial pressure of individual gases.

                2 H 2 O ( g ) ⇄ 2 H 2 ( g ) + O 2 ( g )

                         Kp = [tex]\frac{Partial pressure of products}{Partial pressure of reactants}[/tex]      

                         [tex]K_{p} = \frac{P_{H_{2}^{2} }X P{o_{2} } }{P_{H_{2}O^{2} } }[/tex]      

                    Change of gaseous moles(Δn)

                                                               = 3 - 2

                                                                = 1

                        ⇒ [tex]K_{p} = \frac{(0.006)^{2}X(0.009) }{(0.025)^{2} } \\Kp = 0.005184[/tex]

          ∴  The value of equilibrium constant = 0.005184