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Sulfur, sulfuric acid and sulfates

Periodicity and main group chemistry · Lesson 5 of 5

Lesson 5 of 5

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Lesson 5 of 5 · Periodicity and main group chemistry

Sulfur, sulfuric acid and sulfates

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Describe the structure, allotropy and key reactions of sulfur, including combustion in air and the formation of sulfur dioxide and sulfur trioxide.
State and explain the conditions and catalyst used in the Contact process, and evaluate the compromise between rate, yield, equilibrium position and economic or safety considerations.

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Describe and explain the reactions of sulfates and sulfites where specified, including thermal decomposition patterns, precipitation reactions and oxidation or reduction behaviour.

Apply solubility rules and qualitative analysis to sulfate ions, including the use of acidified barium salts as a test for sulfate and the limited usefulness of this test in the presence of sulfite unless conditions are controlled.

Interpret environmental and industrial contexts involving sulfur compounds, including acid rain, flue-gas desulfurisation and the large-scale uses of sulfuric acid.

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