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The value of the equilibrium constant for the reaction- 2 HBr(g) <==> H2(g) + Br2(g) is Kc = 1.26 x 10-12 at 500 K. This implies that:
a) The product concentrations will be large relative to the reactants at equilibrium.
b) The reaction has a small reaction rate constant.
c) The rate of this reaction is very slow.
d) The reactants are much more thermodynamically stable than the products
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