controlling the rate

Question 1

for a reaction to occur the particles must…

Answer 1

1. collide with energy equal to or greater than the activation energy
2. collide with the correct collision geometry

Question 2

what is activation energy ?

Answer 2

the minimum energy required to allow the activated complex to form (start a chemical process)

Question 3

what increases the reaction rate ?

Answer 3

1. increase in concentration
2. increase in pressure
3. increase in surface area
4. increase in temperature

Question 4

what is the activated complex ?

Answer 4

the unstable arrangement of atoms which form when the reactant molecules collide with sufficient energy

Question 5

how do catalysts increase reaction rate ?

Answer 5

providing a different reaction pathway to the products, lowering the activation energy.