1) When a mass, m, of cyclohexane is burnt in a constant volume bomb calorimeter with heat capacity Ccal, the temperature of the water surrounding the calorimeter is raised by AТ. The heat of combustion of the nichrome wire used to ignite the reactive mixture is q. The lengths of the nichrome wire before and after combustion are Lo and L, respectively. The combustion reaction is carried out at temerature T and pressure P. The standard molar enthalpy of combustion of cyclohexane is written as A ¿H° . Table 1 Experimental conditions and thermodynamic data for AH° m Ccal q Lo L T P the combustion in the bomb calorimeter -3951 +/- 19 kJ/mol 0.78 0.002 g 8222.0+/8.0 J/k -9.6 J/cm 9. 39 +0.05 cm 3. 39 +0.05 cm 20.65 0.04 °C 25.8 +/- 1.0 bar a) Write a balanced equation for the combustion of cyclohexane. (Make sure all stoichiometric coefficients are the smallest possible integers, even if they are "1". Pay attention to phases!) (1) + (1) + (g) Δ b) Using data from Table 1 and from the lab handouts, predict the temperature rise for the water surrounding the calorimeter, ATн, and its standard deviation using the propagation of error method. (Pay attention to the number of sigificant digits used for the molar mass and the gas constant!) ATH₂O = +/- c) Given that the magnitudes of the standard molar heat of combustion of graphite and hydrogen (H2) are -285.83 and -395.51 kJ/mol respectively, determine the standard molar head of formation (A (H) of cyclohexane using the appropriate data from Table 1. (Pay attention to the signs!) A&H = +/- kJ/mol d) Given the standard molar enthalpy of formation of hexane is -167.2 kJ/mol, determine the C-C bond dissociation energy of cyclohexane. BDE (C-C) = +/- kJ/mol
1) When a mass, m, of cyclohexane is burnt in a constant volume bomb calorimeter with heat capacity Ccal, the temperature of the water surrounding the calorimeter is raised by AТ. The heat of combustion of the nichrome wire used to ignite the reactive mixture is q. The lengths of the nichrome wire before and after combustion are Lo and L, respectively. The combustion reaction is carried out at temerature T and pressure P. The standard molar enthalpy of combustion of cyclohexane is written as A ¿H° . Table 1 Experimental conditions and thermodynamic data for AH° m Ccal q Lo L T P the combustion in the bomb calorimeter -3951 +/- 19 kJ/mol 0.78 0.002 g 8222.0+/8.0 J/k -9.6 J/cm 9. 39 +0.05 cm 3. 39 +0.05 cm 20.65 0.04 °C 25.8 +/- 1.0 bar a) Write a balanced equation for the combustion of cyclohexane. (Make sure all stoichiometric coefficients are the smallest possible integers, even if they are "1". Pay attention to phases!) (1) + (1) + (g) Δ b) Using data from Table 1 and from the lab handouts, predict the temperature rise for the water surrounding the calorimeter, ATн, and its standard deviation using the propagation of error method. (Pay attention to the number of sigificant digits used for the molar mass and the gas constant!) ATH₂O = +/- c) Given that the magnitudes of the standard molar heat of combustion of graphite and hydrogen (H2) are -285.83 and -395.51 kJ/mol respectively, determine the standard molar head of formation (A (H) of cyclohexane using the appropriate data from Table 1. (Pay attention to the signs!) A&H = +/- kJ/mol d) Given the standard molar enthalpy of formation of hexane is -167.2 kJ/mol, determine the C-C bond dissociation energy of cyclohexane. BDE (C-C) = +/- kJ/mol
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...
Related questions
Question
slove part B
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
Recommended textbooks for you
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY