Question

In the reaction `B + K leftrightarrow L + H`, if an additional B is added, what will be the result?

Answer 1

Since `B` is a reactant; adding more of `B` will result is the equilibrium shifting to the right side (products side) to minimize the amount of `B` added.

Explanation:

Let us write the equilibrium equation again,

`B+KrightleftharpoonsL+H`

According to Le Châtelier's principle, when a reactant is added to a system at equilibrium, the reaction will proceed in the direction to minimize the concentration (or pressure) of the reactant added.

The same explanation could be used if a product is added to a system at equilibrium.

Since `B` is a reactant; adding more of `B` will result is the equilibrium shifting to the right side (products side) to minimize the amount of `B` added.

Here is a full lesson regarding Le Châtelier's principle:
Chemical Equilibrium | Le Châtelier's Principle.