Rate and Yield In Reversible Reactions

Question 1

What is rate and yield

Answer 1

Rate - the speed of the reaction
Yield - the amount of desired products made

Question 2

Effect of temperature

Answer 2

Rate - High temperature means the particles have more energy so they can overcome the activation energy
More energy = more collisions

Yield - raise temperature favours endothermic reaction
Cool temp favours Exothermic reaction

Question 3

Effect of concentration

Answer 3

Rate - High concentration means that there are more frequent collisions between particles so the rate is faster

Yield - add more reactants favours forwards reaction
Add more products favours backwards reaction

Question 4

Effect of pressure

Answer 4

High pressure means a faster rate because particles are closer and collide more frequently

Yield - only applies to gases
Increase pressure favours side with fewer molecules
Decrease pressure favours side with more molecules

Question 5

Effect of surface area

Answer 5

Bigger surface area ( powder ) means faster rate as there are more particles to collide with

Question 6

Effect of catalyst

Answer 6

Rate - faster rate because it lowers activation energy so more particles have sufficient energy

Yield - no effect just means equilibrium is reached quicker