Calculate the concentrations and substitute them into an expression and compute the 'experimental concentration quotient' or 'Q'. If Q is equal to K eq (50 in this case) then the system is already at equilibrium and stable. If Q K eq then the product is too high and must decrease. Smscaster keygen. Therefore the reverse reaction is favoured. I was reading through the chapter on equilibrium and it says that the Keq can change only if temperature changes - whereas changes in reactant/product concentration or pressure doesn't change Keq. I can't seem to figure out why temperature would change Keq. I mean, once equilibrium is reached, shouldn't the value of Keq remain constant?
A system which is not at equilibrium will move spontaneously to a position of being at equilibrium.
What is Keq : The 'K' in Keq stands for 'Constant'. The 'eq' means that the reaction is at equilibrium. Very roughly, Keq tells you the ratio of Products/Reactants for a given reaction at equilibrium at a certain temperature.
where, A,B,C,D denote the reactants and prodcuts and a,b,c,d are coefficients in the balanced chemical equation.The equilibrium-constant expression for a reaction is an expression obtained by multiplying the concentrations of products,dividing by th concentration of reactants and raising each concentration term to a power equal to the coefficent in the chemical equation.
The equilibrium constant Kc is the value obtained for the equilibrium-constant expression when equilibrium concentrations are substituted.
Keq= [C]c [D]d / [A]a [B] b
Here you denote the molar concentration of a substance by writing its formula is square brackets.The subscript eq on the equilibrium contant means that it is defined in terms of molar concentrations.
The Keq Expressions for Solids and Liquids
For solids: When we write the Keq expression for a reaction with solids, we simply leave out the solids.
