Unit 6 Review (Kinetics, Thermo, Equilibrium)

Front

What happens to the equilibrium position when the volume of a container is decreased?

Back

The equilibrium position shifts to the right, favoring the side with fewer moles of gas.

Front

What factors can increase the rate of a chemical reaction?

Back

Increasing temperature, increasing concentration, and increasing surface area can all increase the rate of a reaction.

Front

Which of the following is NOT a factor affecting reaction rate: temperature, catalysts, particle size, or polarity?

Back

Polarity does not affect the reaction rate.

Front

Why is equilibrium considered a dynamic state?

Back

Because the reactions at equilibrium continue to take place once equilibrium is established.

Front

If the concentration of SO2 is increased in the reaction SO2 + O2 ⇌ SO3, what will happen to the system?

Back

The system will shift to the right.

Front

Define chemical equilibrium.

Back

Chemical equilibrium is the state in which the rates of the forward and reverse reactions are equal, resulting in constant concentrations of reactants and products.

Front

What is Le Chatelier's Principle?

Back

Le Chatelier's Principle states that if a system at equilibrium is subjected to a change in concentration, temperature, or pressure, the system will adjust to counteract that change.

Front

How does increasing temperature affect an exothermic reaction at equilibrium?

Back

Increasing temperature shifts the equilibrium position to the left, favoring the reactants.

Front

What is the effect of adding a catalyst to a reaction at equilibrium?

Back

A catalyst speeds up the rate of both the forward and reverse reactions equally, but does not affect the position of equilibrium.

Front

What is the relationship between reaction rate and concentration?

Back

Generally, an increase in the concentration of reactants leads to an increase in the reaction rate.