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3. Pyrite (FeS,), aka Fool's Gold, can break down in the presence of oxygen gas to form various iron oxides, iron sulfates, and sulfur dioxide gas. The reaction below is just one possibility. Given the following information: () Cal po = -1370 kJ/molpxn AH rxn on at 25 Is thi 2FES,(s) + 502(g) → 2FEO(s) + 4SO2(g) bmperatures would this re -297 kJ/mol -268 kJ/mol for AH for SO,(g) AH for Fe0(s) = %3D %3D (a) Calculate the standard heat of formation, AHF, for FeS2(s).

3. Pyrite (FeS,), aka Fool's Gold, can break down in the presence of oxygen gas to form various iron oxides, iron sulfates, and sulfur dioxide gas. The reaction below is just one possibility. Given the following information: () Cal po = -1370 kJ/molpxn AH rxn on at 25 Is thi 2FES,(s) + 502(g) → 2FEO(s) + 4SO2(g) bmperatures would this re -297 kJ/mol -268 kJ/mol for AH for SO,(g) AH for Fe0(s) = %3D %3D (a) Calculate the standard heat of formation, AHF, for FeS2(s).

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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mol and 3. Pyrite (FeS,), aka Fool's Gold, can break down in the presence of oxygen gas to form various iron oxides, iron sulfates, and sulfur dioxide gas. The reaction below is just one possibility. Given the following information: () Caleulate A for nar 25 Is this 2FES2(s) + 502(g) → 2FeO(s) + 4SO2(g) of temperatures would this read -297 kJ/mol -268 kJ/mol ΔΗΟ = -1370 kJ/mol,xn AH; for SO2(g) = AH for Fe0(s) = %3D (a) Calculate the standard heat of formation, AH, for FeS2(s). S. Examine this reaction A (g+A (@-A, (n) (b) Is the formation of FeS2(s) from elements in their pure form endothermic or exothermic. How do you know? Predicted 2 Explain your reasoning. (BRIEF) (c) If 137 g of FeS2 are attacked by 02 molecules in the atmosphere, calculate the amount of heat absorbed or released. AG LaCpossible) (d) Interestingly, iron is NOT oxidized or reduced by this reaction. Which atom is? Determine the oxidation numbers of that element on both sides of the equation
Transcribed Image Text:mol and 3. Pyrite (FeS,), aka Fool's Gold, can break down in the presence of oxygen gas to form various iron oxides, iron sulfates, and sulfur dioxide gas. The reaction below is just one possibility. Given the following information: () Caleulate A for nar 25 Is this 2FES2(s) + 502(g) → 2FeO(s) + 4SO2(g) of temperatures would this read -297 kJ/mol -268 kJ/mol ΔΗΟ = -1370 kJ/mol,xn AH; for SO2(g) = AH for Fe0(s) = %3D (a) Calculate the standard heat of formation, AH, for FeS2(s). S. Examine this reaction A (g+A (@-A, (n) (b) Is the formation of FeS2(s) from elements in their pure form endothermic or exothermic. How do you know? Predicted 2 Explain your reasoning. (BRIEF) (c) If 137 g of FeS2 are attacked by 02 molecules in the atmosphere, calculate the amount of heat absorbed or released. AG LaCpossible) (d) Interestingly, iron is NOT oxidized or reduced by this reaction. Which atom is? Determine the oxidation numbers of that element on both sides of the equation
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