When a mixture of aluminum powder and iron(III) oxide is ignited, it produces molten iron and aluminum oxide. In an experiment, 5.40g of aluminum was mixed with 18.50 g of iron(III) oxide. At the end of the reaction, the mixture contained is 11.17g of iron, 10.20 g of aluminum oxide, and an undetermined amount of unreacted iron(III) oxide. No aluminum was left. What is the mass of the iron(III) oxide?

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Christian TusoLv10

28 Nov 2020

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Le Châtelier noted that many industrial processes of his time could be improved by an understanding of chemical equilibria. For example, the reaction of iron oxide with carbon monoxide was used to produce elemental iron and CO₂ according to the reaction

Fe₂O₃(s) + 3 CO(g) 2 Fe(s) + 3 CO₂(g)

Even in Le Châtelier’s time, it was noted that a great deal of CO was wasted, expelled through the chimneys over the furnaces. Le Châtelier wrote, “Because this incomplete reaction was thought to be due to an insufficiently prolonged contact between carbon monoxide and the iron ore [oxide], the dimensions of the furnaces have been increased. In England, they have been made as high as 30 m. But the proportion of carbon monoxide escaping has not diminished, thus demonstrating, by an experiment costing several hundred thousand francs, that the reduction of iron oxide by carbon monoxide is a limited reaction. Acquaintance with the laws of chemical equilibrium would have permitted the same conclusion to be reached more rapidly and far more economically.” What does this anecdote tell us about the equilibrium constant for this reaction?

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1.) If 11.0L of hydrogen chloride gas reacts with 50.0 {\rm L} of oxygen gas, what is the volume of chlorine gas produced? Assume all gases are at the same temperature and pressure.\rm HCl(g) + O_2 (g) \rightarrow Cl_2 (g) + H_2 O(g)Express your answer with the appropriate units. V_{\rm Cl_2} = 2.) If 35.0mL of nitrogen gas reacts with 70.0 {\rm mL} of oxygen gas, what is the volume of {\rm N}_{2}{\rm O}_{3} produced? Assume all gases are at the same temperature and pressure.\rm N_2 (g) + O_2 (g) \rightarrow N_2 O_3 (g)Express your answer with the appropriate units3.) If 95.0 {\rm mL} of nitrogen gas reacts with 45.0mL of oxygen gas, what is the volume of {\rm NO}_{2} produced? Assume all gases are at the same temperature and pressure.\rm N_2 (g) + O_2 (g) \rightarrow NO_2 (g)4.) If 3.00 {\rm g} of aluminum hydroxide reacts with 1.50g of sulfuric acid, what is the mass of water produced?\rm Al(OH)_3 (s) + H_2 SO_4 (l) \rightarrow Al_2 (SO_4 )_3 (aq) + H_2 O(l)5.) If 35.5g of molten iron(III) oxide reacts with 175 {\rm g} of aluminum, what is the mass of iron produced?\rm Fe_2 O_3 (l) + 2Al(l) \rightarrow 2Fe(l) + Al_2 O_3 (s)

In an experiment, of powdered iron (III) oxide is mixed with carbon and heated to in a rigid reactor.