b Answered:E Enthalpy - Chemistry x 101 Chem101 app.101edu.co Submit Question 21 of 29 Using the equations Si(s) + 2 Cl2 (g) → SICI4 (s) AH° = -640.1 kJ/mol 2 Fe (s) + 3 Cl2 (g) → 2 FeCl3 (s) AH° = -800.0 kJ/mol Determine the enthalpy for the reaction 3 SiCl: (s) + 4 Fe (s) → 4 FECI3 (s) + 3 Si (s). kJ/mol 1 3 4 8 9. x 100 +/- 8:49 PM O Type here to search 12/8/2019 LO

b Answered:E Enthalpy - Chemistry x 101 Chem101 app.101edu.co Submit Question 21 of 29 Using the equations Si(s) + 2 Cl2 (g) → SICI4 (s) AH° = -640.1 kJ/mol 2 Fe (s) + 3 Cl2 (g) → 2 FeCl3 (s) AH° = -800.0 kJ/mol Determine the enthalpy for the reaction 3 SiCl: (s) + 4 Fe (s) → 4 FECI3 (s) + 3 Si (s). kJ/mol 1 3 4 8 9. x 100 +/- 8:49 PM O Type here to search 12/8/2019 LO

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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and 2 Enthalpy #1.30 enoindice pled TT 2010 2D49.bs 22) When 1 mole of Fe2O3(s) reacts with H₂(g) to form Fe(s) and H2O(g) according to the following equation, 98.8 kJ of energy are absorbed. (6 Fe2O3(s) + 3 H2(g) → 2 Fe(s) + 3 H₂O(g) (pp) (20/d4 (pm) $40 D Reaclanis 13:48 SH Products endothermic, A endothermic, B (2) exothermic, A exothermic, B nad W (21 Enthalpy MOMS. Reactants Products (A) (B) Is the reaction endothermic or exothermic, and which of the enthalpy diagrams above represents grow olor and to noin (01 this reaction? SH GH TH A HOMH X HILD 08.10 Page 6 of 8
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true or false? 3 The enthalpy changes for the reaction CO₂(g) + 3H₂(g) CH3OH(g) + H₂O(g) exceeds -52 kJ/mol.
Use Hess’s law to calculate the enthalpy change for the reaction WO3(s) + 3H2(g) —> W(s) +3H2O(g) from the following data: 2W(s) + 3O2(g) —> 2 WO3(s) H=-1685.4 2H2(g) + O2(g) —> 2H2O(g) H=-477.84
Using standard heats of formation, calculate the standard enthalpy change for the following reaction. 2HBr(g) + Cl₂(g) → 2HCl(g) + Br₂(g) AH (HBr(g)) = -36.3 kJ/mol AH (Cl₂ (9)) = 0.0 kJ/mol AH (HCl(g)) = -92.3 kJ/mol AH (Br₂ (9)) = 30.9 kJ/mol AH rxn = kJ
Using the equations determine the enthalpy for the reaction
5(a)
what is the enthalpy of this equation
Given the standard enthalpy changes for the following two reactions: (1) N2(g) + 202(g)N204(g) AH° = 9.2 kJ (2) 2N20(g)2N2(g) + O2(g) AH° = -164.2 kJ what is the standard enthalpy change for the reaction: (3) 2N½0(g) + 302(g)- →2N2O4(g) AH° = ? kJ
（1）Consider the reaction: 2A (g) + 3 B (g) → 2 C (g) ΔHrxn = +254.3 kJ What will be the enthalpy change (in kJ) if 0.471 mol B reacts in excess A? （2）Consider the reaction: C (s) + O2 (g) → CO2 (g) ΔHrxn = -393.5 kJ What mass of carbon (in g) must be reacted via this mechanism to release 581.2 kJ of heat?