**Title: Calculating Average Molar Bond Enthalpy****Introduction**In this exercise, you will learn how to calculate the average molar bond enthalpy of the carbon-bromine bond in a CBr₄ molecule using given enthalpy values.**Given Data**- ΔHf [Br(g)] = 111.9 kJ·mol⁻¹- ΔHf [C(g)] = 716.7 kJ·mol⁻¹- ΔHf [CBr₄(g)] = 29.4 kJ·mol⁻¹**Objective**Calculate the average molar bond enthalpy of the carbon-bromine (C–Br) bond in a CBr₄ molecule.**Procedure**1. Use the given data and the formula for calculating bond enthalpy using the enthalpies of formation.2. Apply the relationship involving the enthalpies of formation to solve for ΔH_{C–Br}.**Calculation Area**ΔH_{C–Br} = [Calculation Placeholder]**Conclusion**Complete the calculation to find the average molar bond enthalpy of the C–Br bond. This exercise illustrates the use of thermochemical data in bond enthalpy calculations.**Note:**Ensure accuracy in your calculations and refer to any standard tables if necessary.

The balanced overall reaction will be,C + 4 Br → CBr4 Find the ΔHrxn for this reaction first ΔHrxn = [ nΔHfo (products) - nΔHfo (reactants) ] Average molar bond enthalpy can be found out by dividing theΔHrxn with total number of bonds present in CBr4 In CBr4 we have 4 C-Br bonds ΔHrxn = - 4 x ΔHC-Br (negative because bonds broken are 0)ΔHrxn = [ 1mol x 29.4 kJ/mol ] - [ (1mol x 716.7 kJ/mol) + (4mol x 111.9 kJ/mol) ] ΔHrxn = 29.4 kJ - [716.7kJ + 447.6 kJ] = -1134.9 kJ Substitute this value into the bond enthalpy equation -1134.9 kJ = -4 x ΔHC-Br ΔHC-Br = (1134.9/4) = 283.725 kJ Therefore the average molar bond enthalpy of C-Br bond in CBr4 molecule is 283.725 kJ

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Given that AH; Br(g)] = 111.9 kJ-mol- %3D AH; [C(g)] = 716.7 kJ-mol¬1 AH¡ CBr,(g)] = 29.4 kJ-mol¯1 %3D calculate the average molar bond enthalpy of the carbon-bromine bond in a CBr, molecule. AHC-Br %3D

Given that AH; Br(g)] = 111.9 kJ-mol- %3D AH; [C(g)] = 716.7 kJ-mol¬1 AH¡ CBr,(g)] = 29.4 kJ-mol¯1 %3D calculate the average molar bond enthalpy of the carbon-bromine bond in a CBr, molecule. AHC-Br %3D

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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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