Reversible Reactions (GCSE Chemistry)

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

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

Which of the following changes will increase the equilibrium yield of products for an endothermic forward reaction?

For the reversible reaction X ? Y, a teacher records that adding more Y causes the amount of X to increase. Which principle explains this?

Which change will increase the rate of both the forward and reverse reactions but will NOT change the position of a chemical equilibrium?

A reversible reaction reached equilibrium in a sealed vessel. Which of these would definitely change the equilibrium constant K at that temperature?

In the equilibrium 2NO2(g) ? N2O4(g) (forward reaction exothermic), what happens to the colour if pressure is increased by compressing the gas mixture? (NO2 is brown, N2O4 is colourless.)

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

Consider the reversible reaction A(g) ? 2B(g). If some A is removed from the container at equilibrium, the system will:

For the exothermic equilibrium P ? Q + heat, what action would increase the amount of Q at equilibrium?

Which experimental change would increase the rate but reduce the maximum yield for an exothermic forward reaction?