Chemistry Unit 4 Review

Front

What factors affect the position of equilibrium?

Back

Concentration, Pressure, Temperature (States of matter do not affect equilibrium position).

Front

What is activation energy?

Back

The minimum energy required for a chemical reaction to occur.

Front

What does Le Chatelier's Principle state?

Back

If a chemical system at equilibrium is stressed, the system will adjust to reduce the stress.

Front

What is the energy of the products in a chemical reaction?

Back

The potential energy (PE) of the products is the energy stored in the products after the reaction.

Front

What is the difference between endothermic and exothermic reactions?

Back

Endothermic reactions absorb energy, while exothermic reactions release energy.

Front

How does temperature affect equilibrium?

Back

Increasing temperature favors the endothermic direction, while decreasing temperature favors the exothermic direction.

Front

What is the role of a catalyst in a chemical reaction?

Back

A catalyst lowers the activation energy, increasing the rate of the reaction without being consumed.

Front

Define dynamic equilibrium.

Back

Dynamic equilibrium occurs when the rate of the forward reaction equals the rate of the reverse reaction.

Front

What is the significance of the equilibrium constant (K)?

Back

The equilibrium constant (K) quantifies the ratio of products to reactants at equilibrium.

Front

How does pressure affect equilibrium in gaseous reactions?

Back

Increasing pressure shifts the equilibrium towards the side with fewer moles of gas.