Acyl chlorides, have the general formula R.CO.Cl. In systemically naming acyl halides the names end with the suffix -oyl, e.g. ethanoyl chloride CH 3 COCl. The acidic oxides are the oxides of the non-metal elements. Most acidic oxides are soluble in water and react with it giving acids in solution. For example, sulphur trioxide reacts with water to produce sulphuric acid.
All acidic oxides react with alkalis to give salt and water only.
For example, sulphur trioxide reacts with sodium hydroxide in aqueous solution to produce sodium sulphate and water. Similarly, nitric oxide reacts with sodium hydroxide in aqueous solution to produce a mixture of sodium nitrate, sodium nitrite and Water. Acid Rain Acid Rain results from the burning of fossil fuels containing sulphur, when sulphur dioxide is produced during the combustion process. Although the nitrogen in the air is normally uncreative, nitrogen oxides are also produced during the high temperature combustion process. Sulphur dioxide and nitrogen oxides, NO x , are toxic acidic gases which readily react with the water in the atmosphere to form a mixture of sulphuric acid, nitric acid and nitrous acid.