If the reaction between H2 and I2 to form HI were at equilibrium and an additional 0.25 moles of H2 were added to the reaction, what would happen?

The equilibrium would shift in the direction of the products.

The equilibrium would shift in the direction of the reactants.

The equilibrium would shift in the direction of the additional reactant.

The equilibrium would not change.

2 answers

The reaction will shift to reduce H2, or in the direction of the products. The reaction always tends to UNDO what the change was.
A. The equilibrium would shift in the direction of the products