Explanation:
2 NOBr(g) ⇄ 2 NO(g) + Br2(g)
Kc = 1.56 ´ 10-3
Which of the following statements is true?
The reaction quotient (Q) measures the relative amounts of products and reactants present during a reaction at a particular point in time. The Q value can be compared to the Equilibrium Constant, K, to determine the direction of the reaction that is taking place.
- The value of K will decrease until it is equal to Q: This statement is wrong.
Equilibrium constants are not changed if you change the concentrations of things present in the equilibrium. The only thing that changes an equilibrium constant is a change of temperature.
- Q < K so the reaction will continue to make more products.
If Q<K, then the reaction favors the products. the system shifts to the RIGHT to make more products. This statement is true.
- Q > K so the reaction will consume products to make more reactants.
If Q>K, then the reaction favors the reactants. the system shifts to the LEFT to make more reactants. This statement is true.
- The value of K will increase until it is equal to Q: This statement is wrong.
Equilibrium constants are not changed if you change the concentrations of things present in the equilibrium. The only thing that changes an equilibrium constant is a change of temperature.
- Q = K so the system is at equilibrium: This statement is true.
If Q=K, then the reaction is already at equilibrium. There is no tendency to form more reactants or more products at this point. No side is favored and no shift occurs.
