Chemistry Unit 4 Review

Front

What happens to the concentration of O₂ when the equilibrium shifts to the right in the reaction SO₂ + O₂ ⇌ SO₃?

Back

The concentration of O₂ will decrease.

Front

What causes the reaction A + B ↔ C + D + energy to favor the forward reaction?

Back

Increasing B.

Front

What is a catalyst?

Back

A substance that increases the rate of a reaction without being used up during the reaction.

Front

If heat is added to the reaction heat + N₂ + O₂ ↔ 2NO, which direction will the equilibrium shift?

Back

The equilibrium will shift to the right.

Front

Why does increasing pressure shift the equilibrium of N₂ + 3H₂ → 2NH₃ to the right?

Back

To reduce the pressure, as the right side has fewer moles.

Front

What is Le Chatelier's Principle?

Back

If a dynamic equilibrium is disturbed by changing the conditions, the position of equilibrium shifts to counteract the change.

Front

Define dynamic equilibrium in a chemical reaction.

Back

A state where 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 increasing temperature have on an exothermic reaction at equilibrium?

Back

It shifts the equilibrium to the left, favoring the reactants.

Front

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

Back

A substance that undergoes change during the reaction to form products.

Front

How does the addition of a product affect the equilibrium position?

Back

It shifts the equilibrium to the left, favoring the reactants.