2. Which of the following is most similar to a system at equilibrium? *

Why does the equilibrium of a system shift when the pressure is decreased? O To maximize the stress on the system O To stop restoring equilibrium to the system O To increase the total moles of gas in the system To decrease the total moles of gas in the system

For the equilibrium, H2(g)+Cl2(g)⇄2HCl(g), which stress will have no effect?   removing some HCl(g)   increasing [H2]   decreasing [H2]   increasing the pressure

2. A system at equilibrium means the concentration of reactants is equal to the concentration of products. A. True B. False

1Explain chemical equilibrium in your own words and compare how chemical equilibrium reactions are different from others. 2

For the equilibrium: 3NO2(g) N₂O(g) + NO(g) K=1.0 x 10-¹¹. If a 4.00 L container initially holds 0.20 mol of NO₂, how many moles of N₂O, will be present when this system reaches equilibrium? 1

A change in temperature changes the composition at equilibrium because O equilibrium constants depend on temperature. more molecules have enough kinetic energy. O the reverse reaction is not dependent on temperature. the rate of the forward reaction is increased.

There is only one value of the equilibrium constant for a particular system at a particular temperature, but there is an infinite number of equilibrium positions.  Explain.

Which never changes the position of a system at equilibrium? O Changing the concentration of one component O Adding a catalyst ODecreasing the temperature O Decreasing the pressure Increasing the temperature

Equilibrium can occur in a system containing only gases. O True O False