Equilibrium and Reaction Types

The video tutorial explains how temperature changes can predict equilibrium shifts in chemical reactions. It distinguishes between endothermic and exothermic reactions, emphasizing the role of heat as a reactant or product. The tutorial also covers how temperature variations affect equilibrium constants and provides practical lab applications using color changes to determine reaction types.

What must be known to predict the direction of shift for an equilibrium system?

• The sign of enthalpy

• The initial concentrations of reactants

• The volume of the container

• The pressure of the system

In an endothermic reaction, how is heat treated?

• As a reactant

• As a catalyst

• As a product

• As an inhibitor

What happens to the equilibrium when the temperature is increased in an endothermic reaction?

• It becomes unstable

• It shifts to the right

• It remains unchanged

• It shifts to the left

In an exothermic reaction, how is heat treated?

• As an inhibitor

• As a catalyst

• As a product

• As a reactant

What happens to the equilibrium when the temperature is decreased in an exothermic reaction?

• It shifts to the left

• It remains unchanged

• It becomes unstable

• It shifts to the right

How does increasing temperature affect the equilibrium constant (K) in an endothermic reaction?

• K decreases

• K remains unchanged

• K becomes zero

• K increases

How does decreasing temperature affect the equilibrium constant (K) in an exothermic reaction?

• K becomes zero

• K decreases

• K remains unchanged

• K increases

What color change indicates a shift to the right in the given lab scenario?

• Blue to purple

• Purple to blue

• Purple to pink

• Pink to blue

What conclusion can be drawn if a reaction shifts to the left when heated?

• The reaction is at equilibrium

• The reaction is exothermic

• The reaction is endothermic

• The reaction is unstable

What is the final determination of the reaction type in the lab scenario?

• Inhibitory

• Catalytic

• Exothermic

• Endothermic