Answer: forward.
- A backward
- B forward
- C it is at equilibrium
- D it halts
Correct answer: B. forward
Explanation: With Q < K there are too few products, so the net reaction runs forward until Q = K.
As the reaction proceeds, reactant concentration falls and product concentration rises until both level off at equilibrium.
Concept context
When forward and reverse reaction rates are equal, equilibrium is reached. Learn about Kc, Kp, Le Chatelier's principle, and acid-base equilibria, including pH, buffer solutions, and solubility product.