Name Hachel UWest Section 1. Write a balanced equation for the formation of CO this reaction using the following data (at 25 °C): from C and 0, Calculate the enthalpy change for 2(g) C+ ½ 02(0) CO (g) AH = - 111 kJ (s) 2 O219) (g) CO O, + ½ U21g) CO, AH = - 394 kJ 2 (g) Is this reaction endothermic or exothermic? a) Explain how AT would be affected if a greater amount of surrounding solvent (water) is used, assuming the mass of salt remains constant? would be affected if a greater amount of surrounding solvent (water) is used? b) Explain how Explain. Ireaction ies are known:

Name Hachel UWest Section 1. Write a balanced equation for the formation of CO this reaction using the following data (at 25 °C): from C and 0, Calculate the enthalpy change for 2(g) C+ ½ 02(0) CO (g) AH = - 111 kJ (s) 2 O219) (g) CO O, + ½ U21g) CO, AH = - 394 kJ 2 (g) Is this reaction endothermic or exothermic? a) Explain how AT would be affected if a greater amount of surrounding solvent (water) is used, assuming the mass of salt remains constant? would be affected if a greater amount of surrounding solvent (water) is used? b) Explain how Explain. Ireaction ies are known:

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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Given the standard enthalpy changes for the following two reactions: (1) 2Zn(s) + 02(g)2ZNO(s)....AH° = -696.6 kJ (2) Zn(s) + Cl2(g)ZnCl2(s)....AH° = -415.0 kJ what is the standard enthalpy change for the reaction: (3) 2ZNC12(s) + 02(g)2ZnO(s) + 2C12(g)..AH° = ? kJ
What is the AH°rxn for the reaction of gaseous ammonia and oxygen gas to form gaseous nitrogen monoxide and water vapor? Use the given standard heats of formation. Write the balanced chemical reaction. AH°; NH3 (g) AH°;02 (g) = 0 AH°;NO (g) = 103.56 kJ/mol AH°; H20 (g) = -218.42 kJ/mol = -38.17 kJ/mol %3D
Given the standard enthalpies of formation for the following substances, determine the reaction enthalpy for the following reaction. AGran =? kJ 4A (g) + 2B (3) → 1C (g)+ 7D (g) AGi in kJ/mol Substance A (g) B (g) C(g) D (g) 76.34 + 5.24 - 55.86 - 14.55 O - 452.59 kJ/mol O + 452.59 kJ/mol O + 137.17 kJ/mol O - 141.51 kJ/mol O - 137.17 kJ/mol
4) Consider the thermochemical equation below. What mass of HgO must decompose to consume 400.0 kJ of heat? 2 HgO (s) → 2 Hg (1)+ O2(g) AH°rxn =+ 181.4 kJ (1) 5) Write the standard formation reaction for KAI(SO4)2(s). (1) 3 CO2 (g). (1) -393.5 kJ/mol 2 Cr (s) + 3 CO (ag) -110.5 kJ/mol Cr2O3 (s) 6) Consider the reaction 0.0 kJ/mol AH°f = -1139.7 kJ/mol Calculate AH°rxn.
For the reactionCO(g) + Cl2(g) COCl2(g)G° = -62.9 kJ and S° = -137.3 J/K at 331 K and 1 atm.This reaction is (reactant, product) fill in the blank 1 favored under standard conditions at 331 K.The standard enthalpy change for the reaction of 2.37 moles of CO(g) at this temperature would be kJ.
2 N2(g) + O2(g) 2 N2O(g) G° = 203.1 kJ and S° = -148.5 J/K at 262 K and 1 atm. This reaction is (reactant, product) fill in the blank 1 favored under standard conditions at 262 K. The standard enthalpy change for the reaction of 2.07 moles of N2(g) at this temperature would be kJ.
Gasoline is composed primarily of hydrocarbons, includingmany with eight carbon atoms, called octanes. One ofthe cleanest–burning octanes is a compound called 2,3,4-trimethylpentane, which has the following structural formula: The complete combustion of one mole of this compoundto CO21g2 and H2O1g2 leads to ΔH° = -5064.9 kJ.(a) Write a balanced equation for the combustion of1 mol of C8H181l2. (b) By using the information inthis problem and data in Table 5.3, calculate ΔHf° for2,3,4-trimethylpentane.
The reusable booster rockets of the space shuttle use a mixture of aluminum and ammonium perchlorate as fuel. A possible reaction is 3A1(s) + 3NH, Cl0,(8) → Al, O, (s) + AICI; (s) + 3NO(9) + 6H2O(g) Calculate AH° for this reaction. Substance and State AH ° (kJ/mol) Al(s) Al2 O3 (s) AICI3 (s) H2O(g) NO(g) NH, CIO4 (s) -1676 -704 -242 90. -295 AH° = kJ
A sample of NaOH (MM = 40.00 g/mol) with a mass of 1.811 g was added to a solution of HNO3 in a coffee cup calorimeter for a final volume of 100.0 mL. If both solutions were initially at 24.5 °C and the temperature of the resulting solution was recorded as 27.0 °C, determine the AH°rxn (in units of kJ/mol NaOH) for the neutralization reaction between aqueous NaOH. Assume that the density and the heat capacity of the resulting solution are the same as water, 1.00 g/mL and 4.184 J/(g x °C) respectively. Your Answer: Answer units
20) The standard enthalpy change for the reaction below is -196.0 kJ. Use Table below to calculate the standard enthalpy of formation of H₂O (1). 2H₂O2 (1) ->>> 2H₂O (1) + O₂ (g) Substance H₂O2 (1) AH° (kj/mole) -187.8
Heat of reaction (AH°) for the following reaction at 25.0 °C is Fe;O4(6) + CO(g) 3FEO(s) + CO2(g) Given the following Heat of Formation: AHF0304(s) = (-1118 kJ/mol), AHCO(g) = (-110.5 kJ/mol), AHF«06) = (-272KJ/mol), AHco2(g) ( -393.5 kJ/mol),