Homework Help is Here – Start Your Trial Now!
Science
Chemistry
6.76 Diamond and graphite are two crystalline forms of carbon. At 1 atm and 25°C, diamond changes to graphite so slowly that the enthalpy change of the process must be obtained indirectly. Using equations from the list below, determine AH for (2 C(graphite) CO2(g) C(diamond) 6. > AH = -395.4 kJ (1) C(diamond) + O2(8) (2) 2CO2(8) (3) C(graphite) + O2(g) (4) 2CO(g) 2CO(g) + O2(g) ΔΗ= 566.0 kJ → CO2(g) C(graphite) + CO2(g) AH= -172.5 kJ AH = –393.5 kJ Standard Enthalpies of Reaction (AHn) (Sample Problems 6.10 and 6.11) Concept Review Questions 6.77 What is the difference between the standard enthalpy of for- mation and the standard enthalpy of reaction? 6.78 How are AH? values used to calculate AHn? 6.79 Make any changes needed in each of the following equations so that the enthalpy change is equal to AH¡ for the compound: (a) Cl(g) + Na(s) (b) Н.О() - (c) N2(8) + H2(g) · NaCl(s) 2H(g) +02(8) NH3(8) > Skill-Building Exercises (grouped in similar pairs) 6.80 Use Table 6.3 or Appendix B to write a balanced formation equation at standard conditions for each of the following com- pounds: (a) CaCl2; (b) NaHCO;; (c) CCI4; (d) HNO3. 6.81 Use Table 6.3 or Appendix B to write a balanced formation equation at standard conditions for each of the following com- pounds: (a) HI; (b) SiF4; (c) O3; (d) Ca3(PO4)2- 6.82 Calculate AHn for each of the following: (a) 2H2S(g) + 30,(g) · (b) CH4(g) + Cl2(g) - 2SO2(g) + 2H2O(g) CCL,(1) + HCI(g) [unbalanced] Talauloto A H° for each of the following:

6.76 Diamond and graphite are two crystalline forms of carbon. At 1 atm and 25°C, diamond changes to graphite so slowly that the enthalpy change of the process must be obtained indirectly. Using equations from the list below, determine AH for (2 C(graphite) CO2(g) C(diamond) 6. > AH = -395.4 kJ (1) C(diamond) + O2(8) (2) 2CO2(8) (3) C(graphite) + O2(g) (4) 2CO(g) 2CO(g) + O2(g) ΔΗ= 566.0 kJ → CO2(g) C(graphite) + CO2(g) AH= -172.5 kJ AH = –393.5 kJ Standard Enthalpies of Reaction (AHn) (Sample Problems 6.10 and 6.11) Concept Review Questions 6.77 What is the difference between the standard enthalpy of for- mation and the standard enthalpy of reaction? 6.78 How are AH? values used to calculate AHn? 6.79 Make any changes needed in each of the following equations so that the enthalpy change is equal to AH¡ for the compound: (a) Cl(g) + Na(s) (b) Н.О() - (c) N2(8) + H2(g) · NaCl(s) 2H(g) +02(8) NH3(8) > Skill-Building Exercises (grouped in similar pairs) 6.80 Use Table 6.3 or Appendix B to write a balanced formation equation at standard conditions for each of the following com- pounds: (a) CaCl2; (b) NaHCO;; (c) CCI4; (d) HNO3. 6.81 Use Table 6.3 or Appendix B to write a balanced formation equation at standard conditions for each of the following com- pounds: (a) HI; (b) SiF4; (c) O3; (d) Ca3(PO4)2- 6.82 Calculate AHn for each of the following: (a) 2H2S(g) + 30,(g) · (b) CH4(g) + Cl2(g) - 2SO2(g) + 2H2O(g) CCL,(1) + HCI(g) [unbalanced] Talauloto A H° for each of the following:

Chemistry
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...
See similar textbooks
icon
Related questions
Question
78 please
6.76 Diamond and graphite are two crystalline forms of carbon. At 1 atm and 25°C, diamond changes to graphite so slowly that the enthalpy change of the process must be obtained indirectly. Using equations from the list below, determine AH for (2) Ce C(graphite) CO2(8) C(diamond) 6. AH = -395.4 kJ h (1) C(diamond) + O2(8) (2) 2CO2(g) (3) C(graphite) + O2(8) (4) 2CO(g) 2CO(g) + O2(g) AH = 566.0 kJ It fc → CO2(g) C(graphite) + CO2(g) AH = –172.5 kJ AH = -393.5 kJ y Standard Enthalpies of Reaction (AHn) (Sample Problems 6.10 and 6.11) Concept Review Questions 6.77 What is the difference between the standard enthalpy of for- mation and the standard enthalpy of reaction? 6.78 How are AH values used to calculate AHn? 6.79 Make any changes needed in each of the following equations so that the enthalpy change is equal to AH¡ for the compound: (a) Cl(g) + Na(s) (b) H2O(g) (c) N2(g) + H,(8) - NaCl(s) 2H(8) + 02(8) NH3(8) > Skill-Building Exercises (grouped in similar pairs) 6.80 Use Table 6.3 or Appendix B to write a balanced formation equation at standard conditions for each of the following com- pounds: (a) CaCl2; (b) NaHCO3; (c) CCL4; (d) HNO3. 6.81 Use Table 6.3 or Appendix B to write a balanced formation equation at standard conditions for each of the following com- pounds: (a) HI; (b) SiF;; (c) O3; (d) Ca3(PO4)2. 6.82 Calculate AHn for each of the following: (a) 2H2S(g) + 30(8) - (b) CH,(8) + Cl2(8) - 2SO2(8) + 2H2O(g) CCl,(1) + HCI(g) > [unbalanced] Culauloto A H° for each of the following:
Transcribed Image Text:6.76 Diamond and graphite are two crystalline forms of carbon. At 1 atm and 25°C, diamond changes to graphite so slowly that the enthalpy change of the process must be obtained indirectly. Using equations from the list below, determine AH for (2) Ce C(graphite) CO2(8) C(diamond) 6. AH = -395.4 kJ h (1) C(diamond) + O2(8) (2) 2CO2(g) (3) C(graphite) + O2(8) (4) 2CO(g) 2CO(g) + O2(g) AH = 566.0 kJ It fc → CO2(g) C(graphite) + CO2(g) AH = –172.5 kJ AH = -393.5 kJ y Standard Enthalpies of Reaction (AHn) (Sample Problems 6.10 and 6.11) Concept Review Questions 6.77 What is the difference between the standard enthalpy of for- mation and the standard enthalpy of reaction? 6.78 How are AH values used to calculate AHn? 6.79 Make any changes needed in each of the following equations so that the enthalpy change is equal to AH¡ for the compound: (a) Cl(g) + Na(s) (b) H2O(g) (c) N2(g) + H,(8) - NaCl(s) 2H(8) + 02(8) NH3(8) > Skill-Building Exercises (grouped in similar pairs) 6.80 Use Table 6.3 or Appendix B to write a balanced formation equation at standard conditions for each of the following com- pounds: (a) CaCl2; (b) NaHCO3; (c) CCL4; (d) HNO3. 6.81 Use Table 6.3 or Appendix B to write a balanced formation equation at standard conditions for each of the following com- pounds: (a) HI; (b) SiF;; (c) O3; (d) Ca3(PO4)2. 6.82 Calculate AHn for each of the following: (a) 2H2S(g) + 30(8) - (b) CH,(8) + Cl2(8) - 2SO2(8) + 2H2O(g) CCl,(1) + HCI(g) > [unbalanced] Culauloto A H° for each of the following:
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 2 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Phase Diagrams
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
SEE MORE TEXTBOOKS