5.19-5.27-Dynamic Equilibria and Chemical+Fuel cells Flashcards
What is the Haber process?
.A reversible reaction between nitrogen and hydrogen to form ammonia
Give three ways equilibrium is reached at a faster rate
.A higher temperature is used
.A higher pressure/concentration is used
.A catalyst is used
In industrial reactions conditions used are related to what two things?
.The availability and cost of raw materials and energy supplies
.The control of temperature, pressure and catalyst used produce an acceptable yield in an acceptable time
Which three elements/compounds may fertilisers contain?
.Nitrogen
.Phosphorous
.Potassium compounds
Why are fertilisers used?
To promote plant growth
What type of fertiliser contains all 3 elements?
NPK fertilisers
What can ammonia be used to manufacture?
Ammonium salts with nitric acid
What reactants are used in the production of Ammonium sulfate in a lab?
Ammonia solution and Dilute sulfuric acid
What reactants are used in the process of making Ammonia on a large scale?
.Natural gas, air and water
.Sulfur air and water
How many stages are there in the small scale production of Ammonia?
A few stages (Filtration and Crystalisation)
What two processes are used in the small scale production of Ammonia?
Filtration and Crystalisation
How many stages are there in the large scale production of Ammonia?
Many stages
What does a chemical cell produce?
A voltage until one of the reactants is used up
In a hydrogen-oxygen fuel cell, what are hydrogen and oxygen used to produce?
A voltage
What is the only product of a Hydrogen-Oxygen fuel cell?
Water
