Equilibrium and Reaction Rates Quiz

For the reaction CO(g)+2H2(g)⇌CH3OH(g), if the temperature is increased and the reaction is exothermic, the equilibrium will:

• Shift to the right

• Shift to the left

• Not change

• Depend on the pressure

In the reaction H2(g)+Cl2(g)⇌2HCl(g), what happens to the equilibrium position if HCl is added to the system?

• Shifts to the right

• Shifts to the left

• No change

• Increases the concentration of 𝐶𝑙2

The reaction PCl5(g)⇌PCl3(g)+Cl2(g) is at equilibrium. If the volume of the container is decreased, the equilibrium will:

• Shift to the right

• Shift to the left

• Not be affected

• Increase the concentration of PCl5

For the endothermic reaction 2SO3(g)⇌2SO2 (g)+O2 (g), increasing the temperature will:

• Shift equilibrium to the left

• Shift equilibrium to the right

• Not affect the equilibrium

• Increase the amount of SO3

For the equilibrium 2NO(g)+O2(g)⇌2NO2(g), what will happen if the pressure is increased by adding an inert gas?

• Shift to the right

• Shift to the left

• No change in equilibrium position

• Depends on the concentration of NO

In the reaction 2A+B→3C, the rate of appearance of C is 0.30 M/s. What is the rate of disappearance of A?

• 0.10 M/s

• 0.15 M/s

• 0.20 M/s

• 0.30 M/s

Given the rate law for a reaction Rate=k[A][B]², if the concentration of B is tripled, how much will the rate increase?

• Double

• Triple

• Increase by nine times

• Remain the same

For a reaction with a rate law Rate=k[A]^0[B]^1[C]^2, what is the overall order of the reaction?

• Zero order

• First order

• Second order

• Third order

In the reaction A+B→C, the rate of reaction increases when the concentration of A is doubled, but the concentration of B has no effect on the rate. What is the rate law of this reaction?

• Rate=k[A]

• Rate=k[B]

• Rate=k[A][B]

• Rate=k[A]²[B]

If the rate law of a reaction is Rate=k[A]² and the concentration of A is decreased by half, what happens to the rate of the reaction?

• Remains the same

• Decreases by a factor of four

• Decreases by half

• Increases by a factor of two