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Date: 4-11-2018
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Date: 11-10-2018
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Date: 25-1-2019
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There are many different stable sulfur oxides, but the two that are commonly found are sulfur dioxide and sulfur trioxide. Sulfur dioxide is a commonly found oxide of sulfur. It is a colorless, pungent, and nonflammable gas. It has a density of 2.8 kg/m3 and a melting point of -72.5 oC. Because organic materials are more soluble in SO2 than in water, the liquid form is a good solvent. SO2 is primarily used to produce SO3. The direct combustion of sulfur and the roasting of metal sulfides yield SO2 via the contact process:
Sulfur trioxide is another one of the commonly found oxides of sulfur. It is a colorless liquid with a melting point of 16.9 oC and a density of kg/m3. SO3
is used to produce sulfuric acid. SO2 is used in the synthesis of SO3:
This reaction needs a catalyst to be completed in a reasonable amount of time with V2O5 is the catalyst most commonly used.
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تفوقت في الاختبار على الجميع.. فاكهة "خارقة" في عالم التغذية
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أمين عام أوبك: النفط الخام والغاز الطبيعي "هبة من الله"
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قسم شؤون المعارف ينظم دورة عن آليات عمل الفهارس الفنية للموسوعات والكتب لملاكاته
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