Revision Notes. Substances Manufactured for use in Industries. Chemicals, alloys and polymers.

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  1. Manufacture of Sulphuric Acid

Uses of Sulphuric Acid

Sulphuric Acid, H2SO4, has many uses in our daily life. A few examples are:

  1. Manufacture of fertilisers such as ammonium sulphate, (NH4) 2SO4
  2. Manufacture of electrolyte in lead-acid accumulators
  3. Manufacture of soaps and detergents
  4. Manufacture of pesticides (insecticide)
  5. Manufacture of plastic items such as rayon and nylon
  6. Manufacture of paints

Manufacture of Sulphuric Acid in industry

1. Sulphuric acid, H2SO4, is manufactured in industry through the Contact Process.

2. The manufacturing of sulphuric acid, H2SO4, in industry involves three stages.

The three stages involved in the Contact process

Environmental pollution by Sulphur Dioxide

1. Fossil fuels such as petrol and manufactured products of sulphuric acid, H2SO4, contain
   sulphur, S.

2. Burning of these products will oxidise sulphur, S to form sulphur dioxide, SO2.

3. Sulphur dioxide, SO2, is an acidic gas. When it dissolves in rainwater, it forms sulphurous
H2SO3, and causes acid rain.

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4. Sulphur trioxide, SO3, will also form when sulphur dioxide, SO2, reacts with oxygen, O2,
   gas in air.

5. When sulphur trioxide, SO3, dissolves in rainwater, sulphuric acid, H2SO4, is also formed
   causing acid rain.

6. The effects of acid rain on the environment are as follows:

  1. Corrodes and destroys property such as bridges, buildings and statues
  2. Reduces pH of soil and causes it to be unsuitable for plant life
  3. Reduces pH of water and causes the death of aquatic life
  4. Destroys the beauty of the environment such as the collapse of limestone caves
  5. ...

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This is a very comprehensive set of notes. It goes into a good level of detail although the science is at an intermediate level (not too difficult). It is very well written. The author uses bullet points to break the notes down into manageable, user friendly sections. Very helpful diagrams are included throughout Overall, this piece of work is 5 stars out of 5.