C6- rate of reaction

Question 1

Name the factors that effect the rate of reaction (4)

Answer 1

Temperature, concentration, surface area and pressure

Question 2

How do catalysts work? (3)

Answer 2

Catalysts and enzymes speed up a reaction
Catalysts provide a different reaction pathway where reactants do not require as much energy to react when they collide
Catalysts do not appear in word equations as they remain unchanged

Question 3

What are reversible reactions?

Answer 3

When products can react again to re-form the reactants

Question 4

What does Lechateliers principle state?

Answer 4

When we change the conditions of a reaction, the “position of the equilibrium” will shift to counteract that change

Question 5

What happens to the position of the equilibrium if the concentration of a reactant is increased?

Answer 5

more product formed
equilibrium shifts to the right

Question 6

What happens to the position of the equilibrium if the temperature of a system is increased?

Answer 6

exothermic reaction- products decrease (shift to right)
endothermic reaction- products increase (shift to left)

Question 7

What happens to the position of the equilibrium if the pressure of a system is increased

Answer 7

equilibrium moves to produce more of the side with the least gas molecules