Question

How does the equilibrium change to counter the removal of A in this reaction? A + B ⇌ AB

Answer 1

For Plato users :

The equilibrium SHIFTS LEFT. Simultaneously, there’s an increase in the REVERSE reaction.

Answer 2

 To counter the removal of A  the  equilibrium  change by shifting toward the left

         explanation

If the  reaction  is at equilibrium  and we   alter  the condition a new equilibrium  state   is created

  The  removal  of   A led to the shift of equilibrium  toward the left since  it led to  less  molecules  in reactant side  which favor the backward  reaction.(  equilibrium  shift to the left)