Question

What characteristics define a chemical system in equilibrium?

Answer 1

Answer:

Equality of forward and reverse rates.

Explanation:

For the reaction,

A+B→C+D;

there is a forward rate,  

Kf[A][B];

and a reverse rate,  

Kr[C][D].

Equilibrium is defined the equality of forward and reverse rates.

i.e.  

Kf[A][B]=Kr[C][D]

Or,  

Kf/Kr  =  [C][D][A][B]

And  Kf/ Kr  =  Keq,  the equilibrium constant