When does chemical equilibrium result?

Answer 1

When the forward rate is equivalent to the reverse rate of reaction.

For the equilibrium, #A+BrightleftharpoonsC+D#,
There is a rate forward, #=# #k_f[A][B]#,
And there is a reverse rate, #=# #k_r[C][D]#.

By definition, chemical equilibrium occurs when the forward rate is equivalent to the reverse rate:

#k_f[A][B]# #=# #k_r[C][D]#.
And thus, #([C][D])/([A][B])# #=# #k_f/k_r#
The dimensionless constant, #k_f/k_r#, is also known as #K_c#, the thermodynamic equilibrium constant. This is usually a constant for given conditions.
Large values of #K_c# clearly favour the product sides, whereas small values favour the reactant side. Much thermodynamic data have been recorded with respect to various chemical equilibria.
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Answer 2

Chemical equilibrium results when the rates of the forward and reverse reactions are equal, and the concentrations of reactants and products remain constant over time.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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