What are the oxidation states of iron in Fe2O3 and Fe3O4?
in fe2o3 in general oxygen shows the -2 so 3 oxygens shows the 3*-2 = -6
then for 2 Fe shows the +6
then for 1 Fe it shows the 6 / 2 = +3
in fe3o4 the 4 oxygens so 4*-2 = -8
the 3 Fe shows the +8 for the 1 Fe 8/3 = +2.67
answers = in fe2o3 fe = +3
= in fe3o4 fe = +2.67
How many moles of Fe3O4 are required to supply enough iron to prepare 0.732 mol Fe2O3?
Three common ores of iron are FeO, Fe2O3, and Fe3O4. Iron ores are often reduced to elemental iron by heating in the presence of carbon monoxide. These iron ores are all brittle and do not conduct electricity in their solid form. a. Identify the oxidation number of the iron atoms in each of the three ores. b. Choose one of the iron ores and write a balanced chemical equation to show its reduction reaction with carbon monoxide. c. Considering the...
Magnetite is a magnetic iron ore. Its formula is Fe3O4. (a) Construct a pair of conversion factors that relate moles of Fe to moles of Fe304 (b) Construct a pair of conversion factors that relate moles of Fe to moles of O in Fe3O4 (c) How many moles of Fe are in 2.75 mol of Fe304? (d) If this compound could be prepared from Fe2O3 and Oz, how many moles of Fe2O3 would be needed to prepare 4.50 mol Fe3O4?
Calculate the weight of Fe3O4 in 100.0g Fe2O3. Given: molar mass of Fe2O3 =159.69 g/mol Molar mass of Fe3O4 = 231.54 g/mol Hint: you need two conversion factors
. Use the following half reactions to answer questions about the corrosion of iron: Fe3O4 (s)→Fe2O3 s H aq+O2 g→H2O (l) A. (5 pts) Balance the two half reactions and combine to form a balanced overall equation. B. (5 pts) Using your overall balanced equation, determine the Gibbs free energy of the reaction at 25°C. C. (5 pts) Determine the Cell potential of this reaction. (Hint: You can use Gibbs) D. (5 pts) Determine the Equilibrium constant for this reaction...
Compare the quantities of heat released per mole of iron formed when oxides of Fe3O4 and Fe2O3 react with aluminium. 3Fe3O4 + 8Al -> 4Al2O3 +9Fe Delta Heat = -3347.6KJ Fezo3 +2Al -> Al2O3 +2Fe Delta Heat = -851.4KJ
You heat 3.970 g of a mixture of Fe3O4 and FeO to form 4.195 g Fe2O3. The mass percent of FeO originally in the mixture was?
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2. Find out which sample of iron ore contains the highest iron content by calculating the mass percentage of iron in hematite (Fe2O3), magnetite (Fe3O4), and siderite (FeCO3)
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