Reaction Rates and Equilibrium

Front

What are reactants in a chemical reaction?

Back

Reactants are the substances that undergo a change in a chemical reaction, located on the left side of the reaction equation.

Front

What happens to heat in an exothermic reaction?

Back

In an exothermic reaction, heat is given out.

Front

What is the effect of increasing pressure on the equilibrium of the reaction N₂(g) + 3 H₂(g) ⇌ 2 NH₃(g)?

Back

Increasing pressure shifts the equilibrium to the right, increasing the concentration of NH₃.

Front

What happens to the equilibrium position if the concentration of SO₂ is increased in the reaction SO₂ + O₂ ⇌ SO₃?

Back

The equilibrium position will shift to the right.

Front

What is chemical equilibrium?

Back

Chemical equilibrium is the state in which the rate of the forward reaction equals the rate of the backward reaction.

Front

Define equilibrium constant (K).

Back

The equilibrium constant (K) is a numerical value that expresses the ratio of the concentrations of products to reactants at equilibrium.

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

What is the difference between a forward and a reverse reaction?

Back

The forward reaction is the process where reactants are converted into products, while the reverse reaction is the conversion of products back into reactants.

Front

What is an endothermic reaction?

Back

An endothermic reaction is a chemical reaction that absorbs heat from its surroundings.

Front

How does temperature affect reaction rates?

Back

Increasing temperature generally increases reaction rates because particles move faster and collide more frequently.