Manufacture Of Sulfuric Acid

------------------------------------------------- Manufacture of southic Acid: The contact Process randomnessic erosive is recognise using the Contact process. siemensic sharp is construct via treat dioxide. The raw materials be sulphur, air (oxygen) and water. thither argon three stages in the process. The main stages in the cause of sulfuric acid Stage 1: S(s) + O2 (g) ? SO2 (g)  Sulphur dioxide is made by fire sulphur in air or oxygen in a combustion chamber. Sometimes bid disulphide is burned in air instead. The sulphur dioxide is purified to remove impurities that would victimize the throttle at later stages. Stage 2: Sulphur dioxide + Oxygen  Sulphur trioxide 2SO2 (g) + O2 (g)  2SO3 (g) The sulphur dioxide is then converted to sulphur trioxide. This step is called the Contact process. Sulphur dioxide is mixed with oxygen and passed over a catalyst (Vanadium (V) oxide: V2O5)) at 450°C at 1-2 atm. These are the optimum temperatures and pressures for the chemical reception and about 99% of the sulphur dioxide is converted into sulphur trioxide chthonian these conditions. This is a reversible reaction. The beforehand reaction is exothermic. Increasing the temperature decreases the yield. However, at very low temperatures, the set of reaction is very dimmed and the time required would make the process costly. A catalyst and temperature of 450°C are utilize to speed up the reaction while still achieving a reasonable yield. An growth in pressure would also increase the yield and the rate, but the be of this would be high. The catalyst speeds up the rate of both the forward reaction and the backward reaction. The catalyst causes the reaction mixture to sift its equilibrium composition more than quickly. This stage takes place in the converter (c.f. catalytic converters in cars). Stage 3: SO3 (g) + water supply (l) ? H 2SO4 (l) Finally the sulphur trioxide is ! converted to sulphuric acid. Overall, this process dejection be...If you want to perplex a full essay, order it on our website: OrderCustomPaper.com

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