Respuesta :
The Equilibrium concentrations :
[XY] = 0.268 M
[X] = 0.232 M
[Y] = 0.232 M
Solution:
XY ⇔ X + Y
0.2 + x 0.3-x 0.3 - x
Kc = [X][Y]/[XY]
0.200 = (0.3-x)^2 / 0.2 + x
0.04 + 0.2 x = 0.09 + x^2 - 0.6 x
x^2 - 0.8 x + 0.05 = 0
x = 0.732 or x = 0.0683
Equilibrium concentrations :
[XY] = 0.268 M
[X] = 0.232 M
[Y] = 0.232 M
When both the reactants and products are at concentrations that do not change over time, they are said to be in chemical equilibrium. In this state, the forward reaction rate is equal to the reverse reaction rate. A chemical is said to have equilibrium concentrations when the products and reactants do not change with time.
In other words, chemical equilibrium or equilibrium concentration is the state in which the rate of the forward reaction in a chemical reaction equals the rate of the reverse reaction. Equilibrium is when the rate of the forward reaction equals the rate of the reverse reaction. All extract and product concentrations are constant at equilibrium.
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