How does equilibrium shift if heat is added to this reaction? (justify your answer)
shift to reactants (left) because it is exothermic the heat is a product and adding more stress to products shifts to reactants
20
When calcium carbonate is heated it decomposes to form calcium oxide and carbon dioxide. Which of the following is NOT true about this reaction?
The equilibrium can be shifted if calcium oxide is removed
carbon dioxide gas is released
equilibrium cannot be achieved as this is an open system.
Equation: CaCO3(s) <--> CO2(g) + CaO(s)
20
Which of the following is TRUE about this process? N2(g) + 3H2(g) <--> 2NH3(g)
When nitrogen is added more hydrogen is produced
This is not an equilibrium reaction
When ammonia is added, more nitrogen is produced
This is the Haber process
15
What catalyst was used in the Haber process to produce ammonia from nitrogen and hydrogen?
enzymes
iron
iodine
sunlight
15
What is the balanced Haber equilibrium equation? (include states of matter also)
N2(g) + 3H2(g) <--> 2 NH3(g)
15
What is the last state in the life cycle assessment of a product
obtaining and processing raw materials
disposing of the product
using the product
manufacture and packaging of product
15
Zinc oxide reacts with carbon to form zinc and carbon dioxide in a redox reaction. Explain which substance has been oxidised and which has been reduced.
