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chemistry of sulphuric(VI) acid

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Write an essay on the chemistry of sulphuric(VI) acid Sulphuric(VI) acid is very important to our daily lives. In this essay, four aspects of sulphuric(VI) acid, including its production, chemical properties, physical properties and uses will be discussed. Basic information of sulphuric(VI) acid The formula of sulphuric(VI) acid is H2SO4. It is named because the oxidation state of sulphur is +6. The diagram below shows the structure of a sulphuric(VI) acid molecule. Sulphuric(VI) acid is a basic acid since each sulphuric(VI) acid molecule can dissociate to give two hydrogen ions. H2SO4(aq) 2H+(aq) + SO42-(aq) Sulphuric(VI) acid is a strong acid since the sulphuric(VI) acid can ionize completely in water. Production of sulphuric(VI) acid Sulphuric(VI) acid can be produced industrially by Contact Process. (a) ...read more.


SO3(g) + H2SO4(1) H2S2O7(1) H2S2O7(1) + H2O(1) 2H2SO4(1) Sulphur trioxide is not mixed with water directly since large amount of heat will evolve, which vapourizes sulphuric(VI) acid and makes it very hard to be collected. Physical properties of sulphuric(VI) acid Sulphuric(VI) acid is a colourless oily liquid at room temperature and pressure. Sulphuric(VI) acid has a high boiling point (338�C) compare with the other acids. There are extensive intermolecular hydrogen bonds between the sulphuric(VI) acid molecules. The intermolecular attractions between molecules are so strong that sulphuric(VI) acid has a high viscosity and high boiling point. Chemical properties of sulphuric(VI) acid (a) Acidity property Sulphuric(VI) acid is a dibasic acid. When sulphuric(VI) acid is dilute(2M), it behaves like typical acid and reacts with reactive metal to give out hydrogen gas. ...read more.


+ CH3OH(aq) CH3COOCH3(aq) + H2O(1) Sulphuric(VI) acid acts as a catalyst and a dehydrating agent, shifting the equilibrium to the right. (e) Reaction with organic compounds Sulphuric(VI) acid is used in the sulphonation of benzene: Use of sulphuric(VI) acid Sulphuric(VI) acid is very useful in our daily lives. (a) Manufacture of fertilizers Sulphuric(VI) acid can be used to produce fertilizers such as ammonium sulphate. Ammonium sulphate is produced by the reaction of sulphuric(VI) acid and aqueous ammonia. H2SO4(aq) + 2NH3(aq) (NH4)2SO4(aq) (b) Manufacture of soapless detergent Sulphuric(VI) acid is used in the manufacture of soapless detergents. Soapless detergents are made by reacting hydrocarbons with concentrated sulphuric(VI) acid. Soapless detergents can be used in both soft water and hard water. (c) Manufacture of paint additives Sulphuric(VI) acid can also be used in the preparation of paint additives such as barium sulphate and calcium sulphate. ...read more.

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