Chemistry B Unit 5 Test Review Study Guide

Front

What is dynamic equilibrium in a chemical reaction?

Back

Dynamic equilibrium occurs when the rate of the forward reaction equals the rate of the reverse reaction, resulting in constant concentrations of reactants and products.

Front

What effect does adding a reactant have on equilibrium?

Back

Adding a reactant shifts the equilibrium to the right, favoring the formation of products.

Front

What happens to equilibrium when a product is removed?

Back

Removing a product shifts the equilibrium to the right, favoring the formation of more products.

Front

How does increasing pressure affect equilibrium in a reaction with fewer moles of gas on the product side?

Back

Increasing pressure shifts the equilibrium to the side with fewer moles of gas, favoring the formation of products.

Front

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

Back

A catalyst speeds up the rate of a reaction without being consumed, but it does not affect the position of equilibrium.

Front

What is Le Chatelier's Principle?

Back

Le Chatelier's Principle states that if a system at equilibrium is disturbed, the system will adjust to counteract the disturbance and restore a new equilibrium.

Front

What is the Haber process used for?

Back

The Haber process is used to synthesize ammonia (NH3) from nitrogen (N2) and hydrogen (H2) gases.

Front

What is the effect of lowering temperature on an exothermic reaction at equilibrium?

Back

Lowering the temperature shifts the equilibrium to the right, favoring the formation of products in an exothermic reaction.

Front

What does it mean for a system to be in an open system?

Back

An open system can exchange both matter and energy with its surroundings, which prevents the establishment of dynamic equilibrium.

Front

What is the significance of a closed system in chemical reactions?

Back

A closed system allows for the establishment of dynamic equilibrium as it prevents the exchange of matter with the surroundings.