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VCE CHEMISTRY (3)

SULFURIC ACID (P129-134)

1. List the 3 sources of sulfur dioxide used to produce sulfuric acid.

2. Describe the Frasch process.

3. Describe the 3 stages for the production of sulfuric acid, using the following questions as a basis (make sure you could label / draw a diagram for the production of H2SO4)

Stage 1

· Describe, using an equation.

Stage 2

· Write the equation for this stage ? describe what occurs.
· List 3 means to increase the equilibrium yield.
· List 3 means to increase the rate.
· Explain how the conflict between rate and yield is overcome.

Stage 3

· Write the equation for the direct reaction of SO3 with water.
· Why is this method not used? Describe the 2 step process used (include equations).

4. Describe how SO2 emissions can be minimised.

5. List the uses for sulfuric acid.

Sulfuric acid as a strong acid

1. Write an equation to show sulfuric acid acting as a diprotic acid. Do all the HSO4- ions react?
2. Describe how you would dilute sulfuric acid.

Sulfuric acid as a dehydrating agent

1. Explain why sulfuric acid is very dangerous?
2. Write an equation to show its dehydrating properties.
3. How is sulfuric acid sometimes used in the laboratory?

Sulfuric acid as an oxidant

1 .Briefly describe its oxidising properties ? write one equation to show this. In this equation, show sulfuric acid is an oxidant using oxidation numbers.

Questions(133-134): 1, 4-7, 9-14