10.2 - Catalysts

Question 1

What is the role of a catalyst?

Answer 1

Increases the rate of a chemical reaction by providing an alternate reaction pathway with a lower activation energy, without being used up

Question 2

Draw and enthalpy profile diagram for an exothermic reaction with and without a catalyst

Answer 2

:)

Question 3

Draw and enthalpy profile diagram for an endothermic reaction with and without a catalyst

Answer 3

:)

Question 4

What is a heterogenous catalyst?

Answer 4

A catalyst which has a different physical state than the reactants

Question 4

What is a homogenous catalyst?

Answer 4

A catalyst which has the same physical state as the reactants

Question 5

How do catalysts have great economic importance and increased sustainability?

Answer 5

• Lowering the activation energy decreases the temperature needed for the process and the energy requirements, less energy = less electricity/fuel = lower costs = increased profitability
• Reduces energy demand from combustion of fossil fuels and results in reduced CO2 emissions