What is Kep?

1 Answer
Dec 12, 2014

#K_(ep)# is the equilibrium product constant. It determines what you have more of, or what is "favored". If #K_(eq)# is less than one, you have more reactants. If it is greater than 1 you have more products.

#K_(eq)# is calculated by taking the concentration of the products divided by the concentration of the reactants.

For the balanced reaction:

#aA + bB -> cC + dD#

the equilibrium constant, #K_(eq )#is:

#K_(eq) = ([C]^c*[D]^d)/([A]^a*[B]^b)#

the above example is from: http://www.chemicool.com/

Note that the coefficients become exponents.

Also know that concentrations are never added or subtracted, only multiplied and divided.

The unit for concentration is usually moles/liter (Molarity)

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