Equilibrium MCQs
Equilibrium MCQs
Our team has conducted extensive research to compile a set of Equilibrium MCQs. We encourage you to test your Equilibrium knowledge by answering these multiple-choice questions provided below.
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1: You know that the torques must sum to zero about _________ if an object is in static equilibrium.
A. Any point on or the body
B. Any point on or off the body
C. Any point or off the body
D. None of these
2: Heat can never flow from __________.
A. Hot to cold
B. Cold to hot
C. Liquid to solid
D. Solid to liquid
3: What is equilibrium in a chemical reaction?
A. A state where reactants and products exist in equal concentrations
B. A state where the rate of the forward reaction equals the rate of the reverse reaction
C. A state where the reactants have completely transformed into products
D. A state where the concentrations of reactants and products are zero
4: Which of the following does not affect the equilibrium position of a reaction?
A. Temperature
B. Pressure
C. Catalysts
D. Concentration of reactants
5: In an exothermic reaction, how does increasing the temperature affect the equilibrium position?
A. It shifts the equilibrium towards the reactants
B. It shifts the equilibrium towards the products
C. It has no effect on the equilibrium position
D. It depends on the specific reaction
6: What does Le Chatelier's principle state?
A. If a system is at equilibrium, any change will cause the system to remain at equilibrium
B. If a system is at equilibrium, any change will cause the system to shift in the opposite direction to counteract the change
C. If a system is at equilibrium, any change will cause the system to reach a new equilibrium state
D. If a system is at equilibrium, any change will cause the system to stop reacting
7: How does increasing the pressure affect the equilibrium position of a gaseous reaction?
A. It shifts the equilibrium towards the side with fewer moles of gas
B. It shifts the equilibrium towards the side with more moles of gas
C. It has no effect on the equilibrium position
D. It depends on the specific reaction
8: What is the effect of adding a catalyst to a reaction at equilibrium?
A. It increases the rate of the forward reaction
B. It increases the rate of the reverse reaction
C. It has no effect on the equilibrium position or the reaction rate
D. It shifts the equilibrium towards the reactants
9: How does decreasing the temperature affect the equilibrium position of an endothermic reaction?
A. It shifts the equilibrium towards the reactants
B. It shifts the equilibrium towards the products
C. It has no effect on the equilibrium position
D. It depends on the specific reaction
10: What is the relationship between the equilibrium constant (K) and the reaction quotient (Q)?
A. K and Q are always equal at equilibrium
B. K is the ratio of products to reactants at equilibrium, while Q represents the ratio of products to reactants at any point in the reaction
C. K is a measure of the reaction rate, while Q represents the equilibrium position
D. K and Q have no relationship in a chemical reaction
11: What is the significance of the equilibrium constant (K)?
A. It determines the speed of a chemical reaction
B. It indicates the extent to which a reaction has reached equilibrium
C. It quantifies the ratio of products to reactants at equilibrium
D. It predicts the direction of a reaction
12: How can you shift the equilibrium of a reaction towards the products?
A. By increasing the concentration of reactants
B. By decreasing the temperature
C. By removing some of the products
D. By removing some of the reactants
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Equilibrium MCQs
