C10

Question 1

Rate of The reaction?

Answer 1

How quickly reactants r used up or products r produced

Question 2

What is the equation for calculating the mean rate of reaction?

Answer 2

Mean rate = change in quantity of product or reaction ➗ time taken

Question 3

What is the unit for rate of reaction in a reaction involving a change in mass?

Answer 3

g/s

Question 4

What is the unit for rate of reaction involving a change in volume?

Answer 4

cm cubed/ s

Question 5

Activation energy 🔋?

Answer 5

The minimum amount of energy colliding particles need to have before a reaction will take place

Question 6

What effect does increasing concentration have on the rate of reaction?

Answer 6

Increases

Question 7

Y does increasing concentration have this effect of the rate of reaction Increasing ?

Answer 7

More reactant particles in the same volume lead to frequent collisions

Question 8

What effect does increasing pressure have on the rate of reaction?

Answer 8

Increases

Question 9

Y does increasing pressure increase the rate of reaction?

Answer 9

Less space between particles means more frequent collisions 💥

Question 10

Y does increasing surface area increase the rate of reaction ?

Answer 10

More reactant particles r exposed and able to collide, leading to more frequent collisions

Question 11

Y does increasing temperature 🤒 increase the rate of reaction?

Answer 11

Particles move faster 💨
Leading to more frequent collisions
Particle have the same activation energy
So more collisions will result in a reaction

Question 12

What is a catalyst?

Answer 12

A substance that increases the rate of a reaction but isn’t used up in the reaction.

Question 13

How do catalyst increase the rate of reaction?

Answer 13

Lower the activation energy of the reaction so more collisions result in a reaction