Chemistry Isomerism 0.0 / 5 ? ChemistryMany different topicsASAQA Created by: jatyizationCreated on: 15-03-14 00:38 What is the reaction of sulphide ores to oxides? ZnS + 1(0.5)O2 -------- ZnO + SO2 1 of 16 What is the reaction for the prevention of acid rain from SO2? SO2 + H2O + 1.5O2 ---------- H2SO4 2 of 16 How are sulphide ores converted to oxides? Roasting 3 of 16 What is the reduction reaction to produce Iron from carbon? Fe2O3 + 3CO --------- 2Fe + 3CO2 4 of 16 Why are carbon and carbon monoxide used as reducing agents? They are cheap 5 of 16 What is the copper reaction for the previous method? 2CuO + C --------- 2Cu + CO2 6 of 16 What is the copper reaction for the modern method? Cu^2+ + Fe -------------- Cu + Fe^2+ 7 of 16 What is the reaction the happens at the negative electrode for electrolysis? 2Al^3+ + 6e- ---------------- 2Al 8 of 16 What is the reaction for O2 at the positive electrode for aluminium? 3O2 -------- 1(0.5)O2 + 6e- 9 of 16 What is the reaction for the decomposition of Aluminium? Al2O3 ---------- 2Al + 1(0.5)O2 10 of 16 What is the reaction for the reduction of Titanium oxide to Titanium Chloride? TiO2 + 2C + 2Cl ------------ TiCl4 + 2CO 11 of 16 What is the reaction for the reduction of Titanium chloride to Titanium? TiCl4 + 4Na ---------- Ti + 4NaCl 12 of 16 What is the reaction for Tungsten with hydrogen? Wo3 + 3H2 ------------ W+ + 2H2O 13 of 16 What are the dangers of using hydrogen in a reaction? It is highly flammable 14 of 16 Why is carbon reduction not used for extraction of titanium, aluminium and tungsten? Because carbon will for carbide 15 of 16 How is aluminium manufactured? Extracted from bauxite ore; dissolved in molten cryolite; then electrolysed 16 of 16
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