Equilibria
Quiz by Horia
Feel free to use or edit a copy
includes Teacher and Student dashboards
Measure skillsfrom any curriculum
Tag the questions with any skills you have. Your dashboard will track each student's mastery of each skill.
- edit the questions
- save a copy for later
- start a class game
- automatically assign follow-up activities based on students’ scores
- assign as homework
- share a link with colleagues
- print as a bubble sheet
Our brand new solo games combine with your quiz, on the same screen
Correct quiz answers unlock more play!
- Q1
What is a reversible reaction?
A reaction in which products can make reactants and the products can re make the reactants.
A reaction in which reactants can make products and the products can re make the reactants.
30s - Q2
Considering the reaction: nitrogen + hydrogen ⇌ ammonia - what is the backward reaction?
ammonia --> nitrogen + hydrogen
ammonia --> nitrogen + hydrogen
nitrogen + hydrogen --> ammonia
30s - Q3
Considering the reaction: nitrogen + hydrogen ⇌ ammonia - what is the forward reaction?
ammonia --> nitrogen + hydrogen
nitrogen + hydrogen --> ammonia
30s - Q4
What is meant by ‘dynamic equilibrium’?
A reversible reaction occurring in a closed system with the forward and backward reactions occurring at the same constant. The concentrations of the reactants and the products remain rate
A reversible reaction occurring in a closed system with the forward and backward reactions occurring at the same rate. The concentrations of the reactants and the products remain constant
30s - Q5
What does Le Chatelier’s principle state?
If any factor is changed which affects the equilibrium mixture, the position of the equilibrium will shift to oppose the change.
If any factor is changed which affects the equilibrium mixture, the position of the equilibrium will shift to exaggerate the change.
30s - Q6
If the backward reaction is favoured in an equilibrium mixture, which direction does the equilibrium position shift to?
The equilibrium position shifts to the right – increasing the yield of the products.
The equilibrium position shifts to the right – increasing the yield of the products.
The equilibrium position shifts to the left – increasing the yield of the reactants.
30s - Q7
If the forward reaction is favoured in an equilibrium mixture, which direction does the equilibrium position shift to?
The equilibrium position shifts to the left – increasing the yield of the reactants.
The equilibrium position shifts to the right – increasing the yield of the products.
30s - Q8
A + B ⇌ C + D
If the concentration of C is increased– what happens to the equilibrium position?The backward reaction is favoured – the equilibrium position shifts to the left. This lowers the concentration of C.
The forward reaction is favoured – the equilibrium position shifts to the left. This lowers the concentration of C.
The forward reaction is favoured – the equilibrium position shifts to the left. This lowers the concentration of A.
The forward reaction is favoured – the equilibrium position shifts to the right. This lowers the concentration of A.
30s - Q9
A + B ⇌ C + D
If the concentration of A is increased– what happens to the equilibrium position?The backward reaction is favoured – the equilibrium position shifts to the left. This lowers the concentration of C.
The forward reaction is favoured – the equilibrium position shifts to the left. This lowers the concentration of C.
The forward reaction is favoured – the equilibrium position shifts to the left. This lowers the concentration of A.
The forward reaction is favoured – the equilibrium position shifts to the right. This lowers the concentration of A.
30s - Q10
A + B ⇌ C + D
If the concentration of B is decreased – what happens to the equilibrium positionThe forward reaction is favoured – the equilibrium position shifts to the left. This increases the concentration of B.
The backward reaction is favoured – the equilibrium position shifts to the right. This increases the concentration of B.
The backward reaction is favoured – the equilibrium position shifts to the left. This increases the concentration of B.
30s - Q11
A + B ⇌ C + D ΔH° = - 50kJ/mol
What does this tell you about the reaction?backward reaction is exothermic
backward reaction is endothermic
forward reaction is exothermic
forward reaction is endothermic
30s - Q12
A + B ⇌ C + D ΔH° = - 50kJ/mol. The temperature is decreased – what happens?
The forward reaction is favoured – the equilibrium position shifts to the right. This increases the temperature again.
The backward reaction is favoured – the equilibrium position shifts to the left. This reduces the temperature again.
The forward reaction is favoured – the equilibrium position shifts to the right. This reduces the temperature again.
The backward reaction is favoured – the equilibrium position shifts to the left. This increases the temperature again.
30s - Q13
A + B ⇌ C + D ΔH° = - 50kJ/mol. The temperature is increased – what happens?
The backward reaction is favoured – the equilibrium position shifts to the left. This reduces the temperature again.
The forward reaction is favoured – the equilibrium position shifts to the right. This increases the temperature again.
The backward reaction is favoured – the equilibrium position shifts to the left. This increases the temperature again.
The forward reaction is favoured – the equilibrium position shifts to the right. This reduces the temperature again.
30s - Q14
2A + B ⇌ C + D The pressure is increased – what happens?
The forward reaction is favoured; the equilibrium position shifts to the right as there are fewer moles of gas on the right-hand side. This increases the pressure.
The forward reaction is favoured; the equilibrium position shifts to the right as there are fewer moles of gas on the right-hand side. This decreases the pressure.
The backward reaction is favoured; the equilibrium position shifts to the left as there are more moles of gas on the left-hand side. This increases the pressure.
The backward reaction is favoured; the equilibrium position shifts to the left as there are more moles of gas on the left-hand side. This decreases the pressure.
30s - Q15
2A + B ⇌ C + D The pressure is reduced – what happens?
The backward reaction is favoured; the equilibrium position shifts to the left as there are more moles of gas on the left-hand side. This decreases the pressure.
The forward reaction is favoured; the equilibrium position shifts to the right as there are fewer moles of gas on the right-hand side. This decreases the pressure.
The backward reaction is favoured; the equilibrium position shifts to the left as there are more moles of gas on the left-hand side. This increases the pressure.
The forward reaction is favoured; the equilibrium position shifts to the right as there are fewer moles of gas on the right-hand side. This increases the pressure.
30s