Question

Chemical equilibrium

Answer 1

chemical equilibrium.

It can be referred as the concentration of reactant and products shows no net change over the time in Chemical reaction.

1. Reaction must be take place in closed vessel
2. Reaction must be reversible
3. Temperature, pressure and concentration of reactants remain constant.

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Let consider the simple reversible reaction at constant temperature.

A + B → C + D

rate of chemical reaction is proportional to the product of the concentration in moles in proper power of the reactants at a given temperature and pressure.

The rate of conversion of A and B is proportional to their concentration and denoted as r₁

r₁ = k₁ × [A] × [B]

k₁ is a constant known as rate constant or rate coefficient and square brackets denote the concentrations (mol/liter) of the substances enclosed within the brackets

Similarly, the rate of conversion of C and D is as below,

r₂ = k₂ × [C] × [D]

At equilibrium, t

he two rate constants will be equal, r₁ = r₂

k₁ × [A] × [B] = k₂ × [C] × [D]

k₁/k₂ = [C] × [D] / [A] × [B] = K_eq
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Keq is the equilibrium constant at given temperature.

Keq = [C] × [D] / [A] × [B]

Keq = [C] × [D] / [A] × [B]

. At equilibrium,

Keq = Kc

And

if it expressed as partial pressure then

Keq = Kp.============================answer

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