ANADARD ENTHAL FORMAT X"0/c/NDA5MzgwMzl1MDA3/a/NDQyMTg5MDEyNTgz/details2407599116051397577_n.pngOpen with -Standard Enthalpy of Formation and ReactionThe thermite reaction involves aluminum and iron(III) oxide2Al(s) + Fe,03(s) → Al203 (s) + 2Fe(1)This reaction is highly exothermic, and the liquid iron formed is used to weld metals.Calculate the heat released in kilojoules per gram of Al reacted with Fe,03. The AH forFe() is 12.40 kJ/mol and AH° for Fe,0, is -822.2 kJ/mol. The molar mass of Al is26.98g.+

Answered: Image /qna-images/answer/585dbc64-d09f-411a-8dba-d84993d069d9.jpg

The thermite reaction involves aluminum and iron(III) oxide 2Al(s) + Fe,03(s) → Al203(s) + 2Fe(l) This reaction is highly exothermic, and the liquid iron formed is used to weld metals. Calculate the heat released in kilojoules per gram of Al reacted with Fe,03. The AH for Fe(l) is 12.40 kJ/mol and AH for Fe,03 is -822.2 kJ/mol. The molar mass of Al is 26.98g.

The thermite reaction involves aluminum and iron(III) oxide 2Al(s) + Fe,03(s) → Al203(s) + 2Fe(l) This reaction is highly exothermic, and the liquid iron formed is used to weld metals. Calculate the heat released in kilojoules per gram of Al reacted with Fe,03. The AH for Fe(l) is 12.40 kJ/mol and AH for Fe,03 is -822.2 kJ/mol. The molar mass of Al is 26.98g.

Physical Chemistry

2nd Edition

ISBN:9781133958437

Author:Ball, David W. (david Warren), BAER, Tomas

Publisher:Ball, David W. (david Warren), BAER, Tomas

Chapter2: The First Law Of Thermodynamics

Section: Chapter Questions

Problem 2.83E: Benzoic acid, C6H5COOH, is a common standard used in bomb calorimeters, which maintain a constant...

See similar textbooks

Similar questions

Many compressed gases come in large,heavy metal cylindersthat are so heavy that they need a special cart to move them around. An80.0-Ltank ofnitrogen gas pressurized to 172 atm is left in the sun and heats from its normal temperature of 20.0C to 140.0C. Determine a the final pressureinsidethe tank and b the work, heat, and U of the process. Assume that behavior is ideal and the heatcapacity of diatomic nitrogenis 21.0J/mol.K.
The enthalpy of combustion of diamond is -395.4 kJ/mol. C s, dia O2 g CO2 g Determine the fH of C s, dia.
Benzoic acid, C6H5COOH, is a common standard used in bomb calorimeters, which maintain a constant volume. If 1.20 g of benzoic acid gives off 31, 723 J of energy when burned in the presence of excess oxygen and in a water bath having a temperature of 24.6 C, calculate q, w, H, and U for the reaction.
On complete combustion at constant pressure, a 1.00-L sample of a gaseous mixture at 0C and 1.00 atm (STP) evolves 75.65 kJ of heat. If the gas is a mixture of ethane (C2H6) and propane (C3H8), what is the mole fraction of ethane in the mixture?
To determine the specific heat of a newly created, highly conducting material, a 704.8 mg sample of the material was supplied with 35.548 J of heat causing the temperature of the material to rise from 297.05 K to 461.4 K. What is the specific heat of this material? Report your answer in units of J/(ºC · g) to 4 sig figs, but do NOT include units in your answer.
a sample of 98g of pure sulfuric acid is dissolved in 2.0 kg of water in an insulated vessel at 15°C, and thetemperature rises rapidly because of the process of forming the solution. The reaction is summarized in theequation H2SO4(l) -> H+(aq) + HSO4 –(aq). Estimate the temperature change assuming that the heat capacityof the solution is 4.0 J/gK and the heat capacity of the vessel is 300 J/K.
Element X has an enthalpy of fusion of 59.2 kJ mol-1 at its melting point (684°C). Calculate ΔSsys for the process,X(l) → X(s)At 1 bar and 684°C. Express your answer in units of J mol-1 K-1 to 3 significant figures.
50.0 mL of 1.00 M HCl(aq) and 100.0 mL of 1.00 M NaOH(aq), both at 25.0oC, are added together in a calorimeter, the temperature of the mixture reaches a maximum of 29.6 oC. Determine the ΔH°rxn in kJ/mol. Assume no heat is lost to the calorimeter or the surroundings, and that the density and the heat capacity of the resulting solution are the same as water.
Several ice cubes (ρi = 0.9167 g/cm3) of total volume Vi = 205 cm3 and temperature 273.15 K (0.000 °C) are put into a thermos containing Vt = 680 cm3 of tea at a temperature of 313.15 K, completely filling the thermos. The lid is then put on the thermos to close it. Assume that the density and the specific heat of the tea is the same as it is for fresh water (ρw = 1.00 g/cm3, c = 4186 J/kgK). a. Calculate the equilibrium temperature TE in K of the final mixture of tea and water. b. Calculate the magnitude of the total heat transferred QT in J from the tea to the ice cubes.
Nitroglycerin (C3H5N3O9), a liquid at room temperature (25 oC) and atmospheric pressure (1.01325 x 105 Pa) is used to relieve angina. It may undergo decomposition under these same conditions to form nitrogen, carbon dioxide, oxygen and water, with an enthalpy of decomposition of -1541 kJ mol-1The standard enthalpies of formation of water and carbon dioxide are -285.9 kJ mol-1 and -393.5 kJ mol-1 respectively Calculate the work done when 1.0 mole of nitroglycerin decomposes and additionally explain the significance of the sign.
When, a volume of 200 cm3of Lithium hydroxide solution of concentration 1.00 mol/dm3and 200 cm3of Hydrochloric acid of concentration 100 mol/dm3 were mixed together in acalorimeter the reaction was investigated to be exothermic. Based on the information given above in question one (1), calculated the enthalpychange per mol of water produced, if the heat capacity of the calorimeter was 76 J/Kand the temperature rise was 5.25 K. (State any assumptions made)
The standard enthalpy change of combustion [to CO2(g) and H2O()] at 25°C of the organic solid isophthalic acid, C8H6O4(s), is determined to be -3185.8 kJ mol-1. What is the Hf° of C8H6O4(s) based on this value?