Chemical Equilibria Concept of reversibility The equilibrium State Types of Equilibrium Equilibrium law and Equilibrium constants: Calculations. (uppersixth science chemistry new))

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Test your knowledge on chemical equilibria and reversibility concepts!

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Chemical Equilibria Concept of reversibility The equilibrium State Types of Equilibrium Equilibrium law and Equilibrium constants: Calculations. (uppersixth science chemistry new))


Froggy Jumps Chemical Equilibria Concept of reversibility The equilibrium State Types of Equilibrium Equilibrium law and Equilibrium constants: Calculations. (uppersixth science chemistry new))Version en ligne Test your knowledge on chemical equilibria and reversibility concepts! par YAKILI LMS 1 What does the term 'reversibility' in chemical reactions refer to? a Reactions can only proceed in one direction. b Reactions can proceed in both forward and reverse directions. c Reactions are always spontaneous. 2 In a chemical equilibrium, what is the relationship between the rates of the forward and reverse reactions? a The reverse rate is always greater. b The forward rate is always greater. c They are equal. 3 What is the equilibrium constant (K) used for? a To determine the temperature of the reaction. b To measure reaction speed. c To quantify the ratio of products to reactants at equilibrium. 4 Which factor does NOT affect chemical equilibrium? a The color of the reactants. b Temperature c Pressure 5 What happens to equilibrium when a reactant is added? a Equilibrium is disrupted permanently. b The equilibrium shifts to the right, favoring products. c The equilibrium shifts to the left. 6 What does Le Chatelier's Principle state? a Only temperature changes affect equilibrium. b Equilibrium cannot be disturbed. c A system at equilibrium will adjust to counteract changes. 7 In a reversible reaction, what does it mean if K > 1? a Reactants are favored. b Products are favored at equilibrium. c The reaction is not reversible. 8 What is the effect of increasing pressure on gaseous equilibria? a The equilibrium remains unchanged. b The equilibrium shifts toward the side with fewer moles of gas. c The reaction stops completely. 9 What is a characteristic of a dynamic equilibrium? a Reactants are completely converted to products. b The reaction ceases entirely. c The concentrations of reactants and products remain constant. 10 Which of the following is a common example of a reversible reaction? a Combustion of gasoline. b Rusting of iron. c The synthesis of ammonia (Haber process). 11 What is dynamic equilibrium? a A state where the rate of forward reaction equals the rate of reverse reaction. b A state where products are only formed. c A state where no reactions occur. 12 In a closed system at dynamic equilibrium, what happens to the concentrations of reactants and products? a They decrease to zero. b They remain constant over time. c They increase indefinitely. 13 Which factor can disturb a dynamic equilibrium? a Keeping the system closed. b Maintaining constant pressure. c Changing temperature. 14 What does Le Chatelier's principle state? a Equilibrium cannot be disturbed. b A system at equilibrium will adjust to counteract changes. c All reactions are irreversible. 15 What is an example of a dynamic equilibrium? a The rusting of iron. b The reaction between nitrogen and hydrogen to form ammonia. c The melting of ice. 16 How does increasing pressure affect a gaseous equilibrium? a It shifts the equilibrium towards the side with fewer moles of gas. b It has no effect on the equilibrium. c It shifts the equilibrium towards the side with more moles of gas. 17 What is the role of a catalyst in a dynamic equilibrium? a It shifts the equilibrium position. b It speeds up the rate of both forward and reverse reactions equally. c It only affects the forward reaction. 18 Which of the following is true about reversible reactions? a They only proceed in one direction. b They are always exothermic. c They can reach dynamic equilibrium. 19 What happens to the equilibrium position if a reactant is added? a The equilibrium shifts to the right, favoring product formation. b The equilibrium remains unchanged. c The equilibrium shifts to the left. 20 In a dynamic equilibrium, what is true about the rates of reaction? a The reverse reaction is faster. b The rates of the forward and reverse reactions are equal. c The forward reaction is faster. 21 What is dynamic equilibrium? a A state where the forward and reverse reactions occur at the same rate. b A state with only forward reactions. c A state where reactions stop completely. 22 In a dynamic equilibrium, what remains constant? a The pressure of the system. b The concentrations of reactants and products. c The temperature of the system. 23 Which of the following is true about dynamic equilibrium? a It only occurs in open systems. b It requires constant temperature. c It can be established in a closed system. 24 What happens if a system at dynamic equilibrium is disturbed? a It stops all reactions. b It shifts to counteract the disturbance. c It remains unchanged. 25 What is Le Chatelier's principle related to? a The formation of new products. b The response of a system at equilibrium to changes in conditions. c The speed of reaction rates. 26 Which factor does NOT affect dynamic equilibrium? a The presence of a catalyst. b Temperature changes. c Concentration of reactants. 27 Dynamic equilibrium can be achieved in which type of reactions? a Irreversible reactions. b Reversible reactions. c Single displacement reactions. 28 What is the visual representation of dynamic equilibrium? a An equation with only products. b A static equation with no changes. c A balanced equation with equal rates of forward and reverse reactions. 29 Which of the following statements is false about dynamic equilibrium? a The system can be easily disturbed without any effect. b Concentrations remain constant. c The rates of reactions are equal. 30 What role does temperature play in dynamic equilibrium? a It can shift the position of equilibrium. b It has no effect on equilibrium. c It only affects reaction speed. 31 What is the definition of equilibrium in a physical process? a A state where opposing forces or processes are balanced. b A state of constant change. c A process that only occurs in gases. 32 Which law describes the equilibrium of a chemical reaction? a Charles's Law b Boyle's Law c Le Chatelier's Principle. 33 In a closed system, what happens to the concentration of reactants at equilibrium? a It increases indefinitely. b It remains constant. c It decreases to zero. 34 What does it mean if a reaction is at dynamic equilibrium? a The forward and reverse reactions occur at the same rate. b Only one reaction is happening. c No reactions are occurring. 35 Which factor can shift the position of equilibrium? a Increasing the volume of a gas. b Changes in temperature. c Decreasing the pressure of a liquid. 36 What is the effect of adding a catalyst to a reaction at equilibrium? a It speeds up the attainment of equilibrium. b It shifts the equilibrium position. c It changes the equilibrium constant. 37 What happens to equilibrium when pressure is increased in a gaseous reaction? a It has no effect on equilibrium. b It always shifts to the right. c It shifts towards the side with fewer moles of gas. 38 Which of the following is a characteristic of a system at equilibrium? a The system is static and unchanging. b The concentration of products is zero. c The rates of forward and reverse reactions are equal. 39 What is the equilibrium constant (K) used for? a To measure temperature changes. b To calculate reaction rates. c To quantify the ratio of products to reactants at equilibrium. 40 Which of the following statements is true about equilibrium? a Equilibrium is only reached in one direction. b Equilibrium can be reached from either direction of a reaction. c Equilibrium can only occur in solid states. 41 What is a chemical reaction? a A change in temperature only. b A physical change in matter. c A process where reactants transform into products. 42 What does chemical equilibrium refer to? a The state where reactants and products are formed at equal rates. b A reaction that occurs only in one direction. c The complete conversion of reactants to products. 43 Which factor does NOT affect chemical equilibrium? a Temperature changes. b Concentration of reactants. c The color of the reactants. 44 What is Le Chatelier's principle? a If a system at equilibrium is disturbed, it will shift to counteract the disturbance. b Equilibrium can never be disturbed. c All reactions are reversible. 45 What is the role of a catalyst in a chemical reaction? a It changes the reaction products. b It decreases the reaction rate. c It speeds up the reaction without being consumed. 46 In a reversible reaction, what happens when you increase the temperature? a The equilibrium shifts towards the endothermic direction. b The equilibrium shifts towards the exothermic direction. c The reaction stops completely. 47 What is an example of a dynamic equilibrium? a A solid melting into a liquid. b A gas condensing into a liquid. c The formation and breakdown of water molecules. 48 What is the equilibrium constant (K)? a A value that expresses the ratio of products to reactants at equilibrium. b A constant temperature value. c A measure of reaction speed. 49 What happens to the equilibrium position if the concentration of a reactant is increased? a The equilibrium position remains unchanged. b The reaction stops. c The equilibrium shifts to the right, favoring product formation. 50 Which of the following is a characteristic of a chemical reaction? a Change in color only. b Change in state without new substances. c Formation of new substances with different properties.

Chemical Equilibria Concept of reversibility The equilibrium State Types of Equilibrium Equilibrium law and Equilibrium constants: Calculations. (uppersixth science chemistry new))

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Chemical Equilibria Concept of reversibility The equilibrium State Types of Equilibrium Equilibrium law and Equilibrium constants: Calculations. (uppersixth science chemistry new))Version en ligne

par YAKILI LMS

What does the term 'reversibility' in chemical reactions refer to?

In a chemical equilibrium, what is the relationship between the rates of the forward and reverse reactions?

What is the equilibrium constant (K) used for?

Which factor does NOT affect chemical equilibrium?

What happens to equilibrium when a reactant is added?

What does Le Chatelier's Principle state?

In a reversible reaction, what does it mean if K > 1?

What is the effect of increasing pressure on gaseous equilibria?

What is a characteristic of a dynamic equilibrium?

Which of the following is a common example of a reversible reaction?

What is dynamic equilibrium?

In a closed system at dynamic equilibrium, what happens to the concentrations of reactants and products?

Which factor can disturb a dynamic equilibrium?

What does Le Chatelier's principle state?

What is an example of a dynamic equilibrium?

How does increasing pressure affect a gaseous equilibrium?

What is the role of a catalyst in a dynamic equilibrium?

Which of the following is true about reversible reactions?

What happens to the equilibrium position if a reactant is added?

In a dynamic equilibrium, what is true about the rates of reaction?

What is dynamic equilibrium?

In a dynamic equilibrium, what remains constant?

Which of the following is true about dynamic equilibrium?

What happens if a system at dynamic equilibrium is disturbed?

What is Le Chatelier's principle related to?

Which factor does NOT affect dynamic equilibrium?

Dynamic equilibrium can be achieved in which type of reactions?

What is the visual representation of dynamic equilibrium?

Which of the following statements is false about dynamic equilibrium?

What role does temperature play in dynamic equilibrium?

What is the definition of equilibrium in a physical process?

Which law describes the equilibrium of a chemical reaction?

In a closed system, what happens to the concentration of reactants at equilibrium?

What does it mean if a reaction is at dynamic equilibrium?

Which factor can shift the position of equilibrium?

What is the effect of adding a catalyst to a reaction at equilibrium?

What happens to equilibrium when pressure is increased in a gaseous reaction?

Which of the following is a characteristic of a system at equilibrium?

What is the equilibrium constant (K) used for?

Which of the following statements is true about equilibrium?

What is a chemical reaction?

What does chemical equilibrium refer to?

Which factor does NOT affect chemical equilibrium?

What is Le Chatelier's principle?

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

In a reversible reaction, what happens when you increase the temperature?

What is an example of a dynamic equilibrium?

What is the equilibrium constant (K)?

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

Which of the following is a characteristic of a chemical reaction?