4. Hess's LawCalculate AH for the reaction: 2 C(s) + H2(g) → C:H2(g), given the following chemicalequations and their respective enthalpy changes:C2H2(g)+02(g)→2CO2(g)+H20(1)AH, = -1299.6 kJ(1)%3DC(s)+02(g)→CO2(g)AH, = -393.5 kJ(2)H2(g)+502(g)→H20(1) AH3 = -285.8 kJ(3)

The enthalpy change(∆H) of a reaction changes by the following operations ∆H changes its sign when…

Answered: Hess's Law Calculate AH for the…

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

Similar questions

Hydrogen peroxide, H2 O2, is a colorless liquid whose solutions are used as a bleach and an antiseptic. H2 O2 can be prepared in a process whose overall change is H2 (g) + O2 (g) –→ H2O2 (1) Calculate the enthalpy change using the following data: 2H2О2(1) — 2H,0() + О-(9); дн: -196.0 kJ На (9) + 3 О2(9) > H20(1); дН — — 285.8 kJ = - ΔΗ - kJ
Calculate the enthalpy change for the following reaction 2H2S (g) + SO2 (g) → 3S (s) + 2H2O (g) from the following equations: (1) H2O(g) → H2(g) + 1/2 O2(g) Ho = 241.8 kJ (2) H2S(g) → H2(g) + S(s) Ho = 20.6 kJ ( 3) S(s) + O2(g) → SO2(g) Ho = - 296.8 kJ
What is the change in the enthalpy (in kJ) for the complete combustion of 39.0 g of fructose, roughly the amount of sugar in a 12-oz can of soda? C,H12O6 (s) + 602(g) → 6CO2(g)+6H,O(1) AH = -2.83 × 10° kJ mol¬1 A: -6.13 x 102 3703
Use the following information to determine the enthalpy for the reaction shown below. CS2() + 302(g) → CO2(g) + 2SO2(g) C(graphite) + O2(g) CO2(g) S(s) + O2(g) SO2(g) C(graphite) + 2S(s) CS2() AH = -393.5 kJ AH =-296.8 kJ AH = 87.9 kJ Select one: a. -899.2 kJ b. +1075.0 kJ C. -778.2 kJ d. -1075.0 kJ e. +778.2 kJ
Look at the image.
For reaction (b) HCl(g) + NaOH(s) NaCl(s) + H20(I), what is the equation for the change in enthalpy of this reaction? O [AHf° (NaCI(s)) + AHf°(H20(1)] - [AHP(HCI(g)) + AHP(N2OH(s))] O [AHP (HCI(g)) + AHP(N2OH(s))] - [AHP(NaCI(s)) + AHP(H20(1))] Click if you would like to Show Work for this question: Open Show Work SHOW HINT SHOW SOLUTION Part 4 X Your answer is incorrect. Try again. Use the values from the given table and the equation you chose in Part 3 to find the overall change in enthalpy for the reaction. -55200
Hydrogen peroxide, H2O2, is a colorless liquid whose solutions are used as a bleach and an antiseptic. H2O2 can be prepared in a process whose overall change is H2 (9) +O2 (9) → H2O2 (1) Calculate the enthalpy change using the following data: 2H2O2 (1) → 2H2O(1) +O2 (g); AH=-196.0 kJ H2 (g) + O2(g)→ H20(1); AH -285.8 kJ AH kJ %3D
Consider the following reaction. CH3OH(g) CO(g) + 2 H2(g) H = +90.7 kJ ((b) Calculate the amount of heat transferred when 40.0 g of CH3OH(g) are decomposed by this reaction at constant pressure.H = kJ(c) If the enthalpy change is 20.0 kJ, how many grams of hydrogen gas are produced? g(d) How many kilojoules of heat are released when 12.5 g of CO(g) reacts completely with H2(g) to form CH3OH(g) at constant pressure?H = kJ(e) Calculate E when 880.0 g of CH3OH(g) completely reacts at a constant temperature of 300 K and constant pressure of 0.95 atm. R = 8.314 J/mol*K and R = 0.08206 atm*L/mol*K kJ HopHelpCh5N1
Determine the enthalpy of the reaction: 3Fe,O; (s) + CO (g) → CO, (g) + 2Fe;O4 (s), given the following reactions. 38. Fe,O3 (s) + 3CO (g) → 2Fe (s) + 3CO, (g) AH= -28.0 kJ 3Fe (s) + 4CO2 (s) → 4CO (g) + Fe;O4 (s) AH =+12.5 kJ A) 40.5 +109 -59.0 -109
For which one of the following is the enthalpy of the reaction the same as the enthalpy of formation? A) 2 H (g) + Se (s) → H:Se (g) B) KOH (s) → K*(aq) + OH- (aq) C) 2 Fe (s) + 3 Cl2 (g) → 2 FeCl3 (s) D) Ni (s) + ½ O2 (g)- NiO (s)
Given: 4AICI3(s) + 302(g) → 2Al,O3(s) + 6C12(g); AH=-529.0 kJ determine AH for the following thermochemical equation. Cl,(3) + Al,O;(s) → AICI,(9) + 02(g) O +88.2 kJ O +264.5 kJ O +176.3 kJ O -176.3 kJ O +529.0 kJ
(c) Consider the following chemical reaction: C;Hs(g) + H2(g) C2H6(g) + CH4(g) ΔΗ? %3D Calculate the enthalpy change for the reaction above using Hess's law. Thermochemical dat: H:(g) + ½O2(g) H2O(1) AH° =-285.8 kJ AH°combustion for CH4(g) AH° =-890.0 kJ/mol %3D CO:(g) C(s. graphite) + O:(g) AH° = +393.5 kJ AH°combustion for C2H6(g) AH = -1560.0 kJ/mol AH°, for C3H$(g) AH° =-103.8 kJ/mol

SEE MORE QUESTIONS

Recommended textbooks for you

Chemistry

ISBN:

9781305957404

Author:

Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:

Cengage Learning

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

ISBN:

9781305957404

Author:

Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:

Cengage Learning

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

SEE MORE TEXTBOOKS

Hess's Law Calculate AH for the reaction: 2 C(s) + H2(g) → C2H2(g), given the following chemical equations and their respective enthalpy changes: C,H2(g)+02(g)→2CO2(g)+H20(1) AH, = -1299.6 kJ (1) C()+0,(3)¬CO;(g) AH2 = -393.5 kJ H2(g)+;02(g)→H20(!) (2) AH3 = -285.8 kJ (3)