4.22 **Thermo - Problem 4.22****Part A**Calculate the standard enthalpy of formation of $ \text{FeS}_2 \, (\text{s}) $ at 595°C from the following data at 298.15 K. Assume that the heat capacities are independent of temperature.| Substance | $ \text{Fe(s)} $ | $ \text{FeS}_2 \, (\text{s}) $ | $ \text{Fe}_2\text{O}_3 \, (\text{s}) $ | S (rhombic) | $ \text{SO}_2 \, (\text{g}) $ ||---------------|-------------------|----------------|------------------|----------------|---------------|| $ \Delta H_f^\circ \, (\text{kJ · mol}^{-1}) $ | | | $-824.2$ | | $-296.81$ || $ \frac{C_{p,m}}{R} $ | 3.02 | 7.48 | | 2.72 | |You are also given that for the reaction: \[ 2\text{FeS}_2 (\text{s}) + \frac{11}{2} \text{O}_2 (\text{g}) \rightarrow \text{Fe}_2\text{O}_3 (\text{s}) + 4\text{SO}_2 (\text{g}), \]\[ \Delta H_r^\circ = -1655 \, \text{kJ · mol}^{-1}. \]**Express your answer to four significant figures and include the appropriate units.**\[\Delta H_f^\circ = \boxed{-178.2} \, \text{kJ/mol}\]**Submit** | **Previous Answers** | **Request Answer***Note: The calculated answer above is marked incorrect. There are 3 attempts remaining.*

Answered: Image /qna-images/answer/940b7ce0-5971-4ce0-b0f4-1c313146cb8a.jpg

Part A Calculate the standard enthalpy of formation of FeS2 (s) at 595 °C from the following data at 298.15 K. Assume that the heat capacities are independent of temperature. Fe(s) FeS2(s) Fe2O3 (s) S(rhombic) SO2(g) Substance AH: (kJ - mol 1) -824.2 -296.81 CP m/R 3.02 7.48 2.72 You are also given that for the reaction 2FES2(s) + 402(g) → Fe2O3 (s) + 4SO2(g), AH; = -1655 kJ - mol 1 Express your answer to four significant figures and include the appropriate units. kJ AH; =- 178.2 mol Submit Previous Answers Reguest Answer X Incorrect; Try Again; 3 attempts remaining

Part A Calculate the standard enthalpy of formation of FeS2 (s) at 595 °C from the following data at 298.15 K. Assume that the heat capacities are independent of temperature. Fe(s) FeS2(s) Fe2O3 (s) S(rhombic) SO2(g) Substance AH: (kJ - mol 1) -824.2 -296.81 CP m/R 3.02 7.48 2.72 You are also given that for the reaction 2FES2(s) + 402(g) → Fe2O3 (s) + 4SO2(g), AH; = -1655 kJ - mol 1 Express your answer to four significant figures and include the appropriate units. kJ AH; =- 178.2 mol Submit Previous Answers Reguest Answer X Incorrect; Try Again; 3 attempts remaining

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...

See similar textbooks

Similar questions

6.24 Ethanol, used in alcoholic beverages, can be produced by the fermentation of sucrose, which is found in sugar cane and other plants. The balanced equation for the fermentation process is C12H„0,(s) + H,0(1) – (a) What mass of ethanol, C,H,OH, would be produced when 2.50 g sucrose reacts by this process? (b) What mass of CO, would also be produced? 4C,H,OH() + 4CO,(g)
Acetylene torches are used for welding. These torches use a mudure of acetylene gan, CH₂, and oxygen gas, O, to produce the following combustion reaction 2C₂H₂(g) +50; (g)-+4CO(g) + 2H₂O(g) Part A Imagine that you have a 5.50 1, gas tark and a 2.00 1 gas tank You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch if you fill the larger tank with oxygen to a pressure of 155 atan, to what pressure should you till the acetylene tank to ensure that you run out of each gas at the same time? Assume ideal behavior for all gases Express your answer with the appropriate units ▸View Available Hint(s) P Value Submit atm ? X Incorrect Try Again: 5 attempts remaining
49.62 kcal into joules
CS2 6.61 Phosphoric acid, H,PO4, can be prepared by the reac- tion of phosphorus(V) oxide, P4O10, with water. P,O10(s) +H,O(1) → H,PO.(ag); AH = -96.2 kl What is AH for the reaction involving 1 mol of P4O10- %3D P,O 10(s) + 6H,O(I) 4H;PO,(aq)
Chlorine gas can be prepared in the laboratory by the reaction of hydrochloric acid with manganese(IV) oxide. 4HCl(aq)+MnO2(s)⟶MnCl2(aq)+2H2O(l)+Cl2(g)4HCl(aq)+MnO2(s)⟶MnCl2(aq)+2H2O(l)+Cl2(g) A sample of 35.7 g MnO235.7 g MnO2 is added to a solution containing 45.7 g HCl.45.7 g HCl. What is the limiting reactant? HClHCl MnO2MnO2 What is the theoretical yield of Cl2?Cl2? theoretical yield: g Cl2g Cl2 If the yield of the reaction is 86.1%,86.1%, what is the actual yield of chlorine? actual yield:
Write balanced chemical equations for the reactions below, for synthesizing other historical pigments: Solid mercury reacts with solid sulfur to form mercury (II) sulfide, which is called vermillion (a red pigment) 1. 2. Aqueous cadmium (II) chloride reacts with sodium sulfide to form aqueous sodium ions, aqueous chloride ions, and cadmium (II) sulfide, which is called cadmium yellow (a yellow pigment). aqueous
Chlorine is used by textile manufacturers to bleach cloth. Excess chlorine is destroyed by its reaction with sodium thiosulfate, Na2S2O3, as follows:Na2S2O3(aq) + 4Cl2(g) + 5H2O 2NaHSO4(aq) + 8HCl(aq) Using the concepts established in the previous parts, answer the following questions about the following reaction:The octane in gasoline burns according to the following equation:2C8H18 + 25O2 → 16CO2 + 18H2O(a) How many moles of O2 are needed to react fully with 6.84 mol of octane? (b) How many moles of CO2 can form from 0.511 mol of octane? (c) How many moles of water are produced by the combustion of 8.20 mol of octane? (d) If this reaction is used to synthesize 6.00 mol of CO2, how many moles of oxygen are needed? How many moles of octane are needed? ? mol O2 ? mol C8H18 Thanks.
5.
32. A lotion vehicle contains 15% v/v of glycerin (sp gr 1.25). How much glycerin should be used in preparing 5 gallons of the lotion? a. 2271 g glycerin b. 3339.7 mL glycerin c. 2671.8 g glycerin d. 3548.4 g glycerin
esc One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is by titrating a sample of silver nitrate solution. Any chloride anions in solution will combine with the silver cations to produce bright white silver chloride precipitate. Suppose an EPA chemist tests a 250. mL sample of groundwater known to be contaminated with copper(II) chloride, which would react with silver nitrate solution like this: CuCl₂(aq) + 2 AgNO3(aq) → 2 AgCl(s) + Cu(NO3)₂(aq) C The chemist adds 90.0 mM silver nitrate solution to the sample until silver chloride stops forming. She then washes, dries, and weighs the precipitate. She finds she has collected 6.0 mg of silver chloride. olla Calculate the concentration of copper(II) chloride contaminant in the original groundwater sample. Round your answer to 2 significant digits. Ar mg x10 L x 5 ? Explnation :: 1 FI 2 Check F2 # 3 80 F3 $ 4 OOD 000 F4 % 5 A FS A 6 F6 & 7 90 Ⓒ2022 McGraw Hill LLC. All Rights Reserved. Terms of…
show stereochemistry 1. PBr3 Na H CH 1. T3-C ܕܐ ܕ O Na show stereochemistry
5.26 Write the products and balance the following reac- tion for the complete combustion of butane, C4H10. C4H10(g) ? O₂(g) → Caver