What happens to the equilibrium position if the concentration of reactants is increased?

• The equilibrium position remains unchanged.

• The equilibrium position shifts towards the products.

• The equilibrium position shifts towards the reactants.

• The equilibrium position disappears.

How does an increase in temperature affect the equilibrium in an endothermic reaction?

• Shifts equilibrium towards the exothermic reaction to favor reactants

• Causes equilibrium to remain unchanged

• Shifts equilibrium towards the endothermic reaction to favor reactants

• Shifts equilibrium towards the endothermic reaction to favor products

Explain Le Chatelier's Principle and how it relates to equilibrium.

• Le Chatelier's Principle explains how systems respond to changes in conditions to maintain equilibrium.

• Le Chatelier's Principle predicts the exact outcome of any disturbance in a system.

• Le Chatelier's Principle is only applicable to chemical reactions involving gases.

• Le Chatelier's Principle states that equilibrium cannot be disturbed.

How does a decrease in pressure affect the equilibrium in a reaction involving gases?

• Causes the reaction to stop

• No effect on equilibrium

• Shift towards the side with less moles of gas

• Shift towards the side with more moles of gas

Discuss the effect of a catalyst on reaching equilibrium in a chemical reaction.

• A catalyst speeds up the rate at which equilibrium is reached by lowering the activation energy for both the forward and reverse reactions.

• A catalyst slows down the rate at which equilibrium is reached by increasing the activation energy for both the forward and reverse reactions.

• A catalyst has no effect on reaching equilibrium in a chemical reaction.

• A catalyst only affects the forward reaction and not the reverse reaction in reaching equilibrium.

What role does the equilibrium constant (Kc) play in determining the extent of a reaction?

• The equilibrium constant (Kc) changes depending on the concentration of the reactants.

• The equilibrium constant (Kc) is only relevant in exothermic reactions.

• The equilibrium constant (Kc) helps determine whether a reaction favors the formation of products or the presence of reactants at equilibrium.

• The equilibrium constant (Kc) determines the rate of the reaction.

How does the addition of a product affect the equilibrium position in a reversible reaction?

• The equilibrium position shifts to the left.

• The equilibrium position shifts to the right.

• The equilibrium position remains unchanged.

• The equilibrium position disappears.

Explain the concept of dynamic equilibrium in a chemical reaction.

• Dynamic equilibrium involves a constant change in reactant concentrations

• Dynamic equilibrium means the reaction has stopped

• Dynamic equilibrium is achieved in a closed system where the concentrations of reactants and products remain constant, but the reactions are still occurring.

• Dynamic equilibrium occurs only in open systems

Discuss the impact of changing the volume of a reaction vessel on the equilibrium position.

• Increasing the volume always shifts the equilibrium to the left

• Changing the volume has no impact on the equilibrium position

• The equilibrium position is not affected if the number of moles of gas remains constant.

• Decreasing the volume always shifts the equilibrium to the right

How does the nature of the reactants and products influence the equilibrium in a chemical reaction?

• The smell of the reactants and products

• The color of the reactants and products

• The position of the equilibrium shifts based on whether reactants or products are favored.

• The taste of the reactants and products