Flashcards in Unit 2 Topic 8 Non Metals Deck (44):
What is a clean fuel? Give example?
A fuel that doesn't produce toxic or polluting products, like hydrogen
Give 2 benefits of using hydrogen as fuel?
Can be used in fuel cells
Give 2 disadvantages of using hydrogen as fuel?
Hydrogen must be manufactured
2 uses of hydrogen?
Give 2 uses of carbon dioxide?
Give 3 physical properties of carbon dioxide?
Chemical formula for carbonic acid?
Give 2 uses of nitrogen?
Can be used in fertiliser
Give 3 physical properties of nitrogen?
Give 3 physical properties of oxygen?
Give 2 uses of oxygen?
How is oxygen prepared?
Place catalyst Manganese Dioxide in Hydrogen Peroxide and this speeds up decomposition of Hydrogen Peroxide and produces oxygen
Give 3 physical properties of ammonia?
Give formula of Ammonia?
2 advantages of using nitrogen in fertilisers?
Greater nitrogen uptake by plant
Increase crop yield
2 disadvantages of using nitrogen in fertilisers?
May get in waterways, which causes eutrophication
Can cause stomach cancer if it gets in drinking water
What chemical can be used to test for cations?
Colour of magnesium precipitate when ammonia added? Soluble in excess?
Colour of copper precipitate when ammonia added? Soluble in excess?
Pale blue, yes ( dark blue solution )
Colour of aluminium precipitate when ammonia added? Soluble in excess?
Colour of iron (II) precipitate when ammonia added? Soluble in excess?
Colour of iron (III) precipitate when ammonia added? Soluble in excess?
Colour of zinc precipitate when ammonia added? Soluble in excess?
White, yes ( colourless solution )
How is ammonia produced?
Give 2 reactants in Haber Process?
What temperature is Haber process carried out at?
What pressure is Haber Process carried out at?
What catalyst is used in Haber Process?
What do use instead of an arrow when writing the equation for the Haber Process? Why?
Give 3 allotropes of sulfur?
Give 3 physical properties of sulfur dioxide?
What is produced when sulfur dioxide reacts with water?
Weaker than sulphuric acid
Give effect of acid rain on trees?
Harms leaves and makes it harder for plant to produce glucose through photosynthesis
Give effect of acid rain on waterways?
Water becomes acidic, most fish cannot live in acidic water
Give effect of acid rain on buildings?
Reacts with calcium carbonate in limestone which corrodes buildings
Give 3 measures to reduce acid rain?
Burn less fossil fuel
Remove sulfur from fossil fuels
Remove acidic gases from combustion products
What process produces Sulphuric Acid?
Give the 4 stages of the Contact Process?
- 1. Combustion of sulfur
- 2. Catalytic production of sulfur trioxide
- 3. Absorption in concentrated sulphuric acid
- 4. Dilution of oleum
What does Stage 2 of Contact Process involve?
Sulfur dioxide is mixed with more air
What temperature, pressure, and catalyst is used in Stage 2 of Contact Process?
What does Stage 3 of Contact Process involve?
Sulfur trioxide dissolved in concentrated sulphuric acid to form Oleum
What does stage 4 of Contact Process involve?
Oleum mixed with water to produce Sulphuric Acid
Give a use of sulphuric acid?