Question

What does a very large Keq indicate?

Answer 1

That the given equilibrium lies strongly to the right, i.e. towards the products.

Explanation:

For the reaction,
`A+BrightleftharpoonsC+D`
We may write the equilibrium as,
`K_(eq) = ([C][D])/([A][B])`

Clearly, if `K_(eq)` is large, the equilibrium lies strongly to the right. Is the consistent with the arithmetic?