Sweet Oranges and Apples Flashcards
What are the conditions for cracking? (2)
- 600-700°C
- silica (SiO2) or alumina (Al2O3) catalyst
What are the conditions for the Haber process? (3)
- 450°C
- 200 atm
- iron catalyst
What are the conditions for hydration of ethene? (3)
- 300°C
- 60-70 atm
- phosphoric acid catalyst
What is the condition for dehydration of ethanol? (1)
- aluminium oxide (Al2O3) catalyst
What are the starting materials for the Haber process?
- nitrogen from air
- hydrogen from natural gas or the cracking of hydrocarbons
What are the names of the 7 fractions obtained from crude oil?
Refinery Gas Gasoline Kerosene Diesel Fuel Oil Bitumen
Why is carbon monoxide poisonous?
Binds to haemoglobin and reduces the capacity of the red blood cells to carry oxygen
What are the two pollutant gases which contribute to acid rain?
Nitrogen oxides and sulfer dioxide
What are the problems caused by acid rain?
- Kills trees
- Damages limestone statues and stone buildings
- Causes lakes to become acidic, killing animals and plants
(- Human health issues?)
Where are nitrogen oxides made?
In car engines when the temp is high enough for the nitrogen and oxygen from air to react
When is sulfer dioxide made?
Comes from sulfer impurities in fossil fuels
What is the condition for fermentation? (1)
30°C
What are the conditions for the contact process?
- 450°C
- 2 atm
- vanadium oxide catalyst
What are the two uses of the ammonia made in the Haber process?
manufacture of
- nitric acid
- fertilisers
What are the three uses of the sulfuric acid made in the Contact process?
manufacture of
- detergents
- fertilisers
- paints
