Given the following reactions and their enthalpies: ΔΗ (k/mol) H2(g) O2(g) 2H(g) 20(g) +436 +495 1 H>(g) + 02(g) → H;O(g) -242 (a) Devise a way to calculate AH for the reaction H,O(g) 2H(g) + O(g) (b) From this, estimate the H -0 bond energy.

Given the following reactions and their enthalpies: ΔΗ (k/mol) H2(g) O2(g) 2H(g) 20(g) +436 +495 1 H>(g) + 02(g) → H;O(g) -242 (a) Devise a way to calculate AH for the reaction H,O(g) 2H(g) + O(g) (b) From this, estimate the H -0 bond energy.

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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4) Given the data N2(8) + O2(8) 2 NO(8) AH = +180.7 kJ 2 NO(8) + O2(8) · 2 NO,(8) 2 N,0(8) – 2 N2(8) + O2(8) AH = -163.2 kJ AH = -113.1 kJ | use Hess's law to calculate AH for the reaction N20(8) + NO2(8) –→ 3 NO(8)
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Calculate the standard enthalpy of formation for C3H6O (l) from its combustion using the following data: Enthalpy of this combustion is -1793 kJ ( you must write a balanced reaction first).
Q.29. Determine, at 298 K, AH, the standard enthalpy of the reaction (1) between dinitrogen tetraoxide and hydrazine: (1) N204 (g) + 2 N2H4 (1) → 3 N2 (g) + 4 H20 (g) Knowing the standard reaction enthalpies, at 298 K, of the following reactions: (2) NH3 (g) 1/2 N2 (g) + 3/2 H2 (g); A2H° - + 46,19 kJ. mol (3) N204 (g) 2 NO2 (g); AgH-+ 58,04 kJ. mol- (4) 2 NH3 (g) > N2H (I) + H2 (g) ; AraH° = + 142,80 kJ. mol- (5) 2 NO, (g) + 4 H2 (g) → N2 (g) + 4 Hz0 (g) ; AsH = - 1 033,66 kJ. mol-
A chemist measures the enthalpy change AH during the following reaction: 4 Fe(s) + 3 02(g)→2 Fe,O3(s) AH =-320. kJ Use this information to complete the table below. Round each of your answers to the nearest kJ/mol. reaction ΔΗ x10 Fe(s) + 0,6) - Fe,0,(1) O kJ 2Fe,0; (s) – 4Fe(s) + 30, (3) O kJ 4Fe,0, (s) - 8Fe(s) + 60, (3)
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A chemist measures the enthalpy change AH during the following reaction: COCL,(9) + 4 NH,(g)–+cO(NH,),(s) + 2 NH,Cl(s) AH=-559. kJ Use this information to complete the table below. Round each of your answers to the neare reaction AH co(NH,),(-) + NH,CI(3) - coC, () + 2NH, (2) 3coCI, (3) + 12NH, (3) - 3c0(NH,), (-) + 6NH,CI(s) co(NH,),() + 2NH,C1(«) → COCI, (3) + 4NH, (2) Explanation Check MacBook Air 20 F1 F3 F4 F5 F6 F @ & くC
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