Reversible Reactions (GCSE Chemistry)

What does Le Chatelier’s principle predict if, at equilibrium, some product is removed from the system?

Hydrogen and iodine reach a dynamic equilibrium: 2HI ? H2 + I2. Which of the following best describes a dynamic equilibrium?

In an equilibrium involving gases, which factor would NOT affect the position of equilibrium?

A certain reversible reaction is endothermic in the forward direction. When the system is cooled, the equilibrium will:

Which of the following describes why increasing pressure can change the extent of a gas-phase equilibrium?

A student carries out a reversible gas reaction in a closed container and increases the container temperature. Immediately the concentration of product increases but later drops to a lower value than before the temperature change. Is this possible?

In a reversible reaction, why might chemists accept a lower equilibrium yield in industry rather than using conditions that give the highest possible yield?

Which action will not change the position of a gas equilibrium mixture?

In an exothermic reversible reaction at equilibrium, adding heat will:

Which of these describes why changing concentration shifts an equilibrium?

Which of the following is an accurate short Le Chatelier statement?