When the number of moles of reactants and products are the same, the equilibrium constant will have:
Correct answer: C. No units
- A. Negative value
- B. Large value
- C. No units
- D. Units
Explanation
OPTION A: A small (negative) Kc value (less than 1) indicates that there are more reactants than products at equilibrium. OPTION B: A large Kc value (greater than 1) indicates that there are more products than reactants at equilibrium. OPTION C: When the number of moles of reactants and products are the same then the equilibrium constant has no units. Hence, C is the correct option.OPTION D: It is an incorrect option.
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About Reversible Reactions
A reversible reaction proceeds in both forward and backward directions, so reactants and products continue changing until dynamic equilibrium is established. The topic covers the meaning of equilibrium, the equality of forward and reverse rates, and how concentration, pressure and temperature disturb equilibrium, which is separate from the rate at which equilibrium is reached.
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