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31 December, 09:04

Which of the following is true regarding Keq?

a. Equilibrium constants do not have units.

b. The equilibrium constant is fixed for a given reaction at a specific temperature.

c. It can be determined by the following equation [reactants]/[products].

d. all of the above the first two options only

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Answers (1)
  1. 31 December, 11:16
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    option b is true

    Explanation:

    Since the equilibrium constant Kp is defined as the ratio of [products]/[reactants] (option c is false), then Kp units depends on the order of reaction of the reactants and the number of reactants and products involved (option a is false).

    for example if the concentration is expressed as M (molarity)

    Keq = [A]/[B]*[C] then Kep has as units 1/M

    Also t a specific temperature, the equilibrium constant represents the relationship between concentrations of reactants and products, and its fixed at constant temperature (option b is true).
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