C3 - Reversible Reactions Flashcards
Why do reversible reactions occur in closed systems?
Nothing can escape so the products & reactants can find balance.
What does the position of equilibrium in a reversible reaction depend on? [2]
Temperature & pressure.
Why would someone deliberately alter the position of equilibrium in a reversible reaction?
To get more product.
What would happen if you raised the temperature of a reversible reaction and why?
The endothermic reaction would increase to use up the extra heat.
What would happen if you lowered the temperature of a reversible reaction and why?
The exothermic reaction would increase to give out more heat.
What type of process is bond-breaking?
Bond-breaking is an endothermic process.
What type of process is bond-making?
Bond-making is an exothermic process.
What would happen if you raised the pressure of a reversible reaction?
It would encourage the reaction which produces less.
What would happen if you lowered the pressure of a reversible reaction?
It would encourage the reaction which produces more.
What effect does adding a catalyst have on the point of equilibrium of a reversible reaction and why?
It doesn’t affect it because it speeds up both reactions by the same amount.
The reactions will merely reach equilibrium quicker.
What is a reversible reaction?
A reaction where the products react to produce the original reactants.
