2.6 Reversible reactions (new) Flashcards
What is a reversible reaction?
A chemical reaction in which the products can react to form the original reactants
How can Ammonia be formed?
- By using the Haber process
- Nitrogen + Hydrogen
- reversible reaction
What happens if you add heat during the HABER PROCESS?
- Adding heat will force the equilibrium to the left and favour more starting material
- RATE increases
- YIELD of ammonia decreases
What happens if you lower the temperature during the HABER PROCESS?
- a higher yield of ammonia
- the rate would be very low
What happens if you increase the PRESSURE during the HABER PROCESS?
- it will favour the side with the MORE MOLES (Nitrogen and hydrogen)
- we will produce more ammonia
- it is dangerous and expensive
What is the chemical formula for Ammonia?
NH3
How do we test for Ammonia?
- Hold red litmus paper into the gas
- If ammonia is present the red litmus turns into BLUE
How is Sulfuric acid made?
Using the Contact Process
Describe the process of making SULFURIC ACID using the CONTACT PROCESS?
Stage 1 - Sulphur + Oxygen (BURNS IN AIR) = Sulphur Dioxide
Stage 2 - Sulphur Dioxide + Oxygen ⇌ Sulphur Trioxide (REVERSIBLE)
Stage 3 - Sulphur Trioxide + Water = Sulfuric Acid
What do we use SULPHURIC ACID for?
It is used in the production of
-fertilisers, paints, dyes, fibres, plastics and detergents
How can we show that SULPHURIC ACID is a dehydrating agent?
- By reacting it with Sugar and Hydrated Copper (II) Sulfate
How can we create Ammonium Nitrate?
Nitric Acid + Ammonia Hydroxide = Ammonium Nitrate
How can we create Ammonium Sulphate?
Sulfuric Acid + Ammonia Hydroxide = Ammonium Sulphate
What are 4 Advantages of using Nitrogenous fertiliser?
- Increase crop yield
- Healthier crops
- Improve Soil quality
- Less land needed to grow crops
what are 4 Disadvantages of using Nitrogenous fertiliser?
- Blue Baby Syndrome
- Can cause stomach cancer
- Pollutes water
- Eutrophication
