Constants I Periodic Tab The equilibrium constant, K, of a reaction at a particu

Question

Constants I Periodic Tab The equilibrium constant, K, of a reaction at a particular temperature is determined by the concentrations or pressures of the reactants and products at equilibrium. For a gaseous reaction with the general form the Ke and Kp expressions are given by CA B (PA)"(h)b The subscript c or p indicates whether K is expressed in terms of concentrations or pressures Equilibrium-constant expressions do not include a term for any pure solids or liquids that may be involved since their composition does not change throughout the reaction. The standard state of a pure substance is the pure substance itself, and although the quantity may change the sample remain pure. The concentration is effectively equal to 1, and will not impact the magnitude of K

Explanation / Answer

                     H2(g)   + I2(g) ------------------> 2HI(g)

     I               3.35        2.4                           0

     C              -2.33    -2.33    2*2.33

   E    1.02 0.07 4.66

   Kc = [HI]^2/[H2][I2]

   = (4.66)^2/1.02*0.07

= 304.14 >>>>>answer   

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