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Please answer question 11 part A and B

Please answer question 11 part A and B

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...
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Please answer question 11 part A and B

Part B Calculate the enthalpy of the reaction 4B(s) + 302 (g)–→2B2O3(s) given the following pertinent information: 1. B2O3 (s) + 3H2O(g)→3O2(g)+ B2H6 (g), AH = +2035 kJ 2. 2B(s) + 3H2 (g)→B2H6 (g), 3. H2 (g) + 글 O2 (g)→H2O(1), 4. H2O(1)→H2O(g), AH = +36 kJ AH: = -285 kJ AĦ¡ = +44 kJ Express your answer with the appropriate units. • View Available Hint(s) ? ΔΗ' Value Units
Transcribed Image Text:Part B Calculate the enthalpy of the reaction 4B(s) + 302 (g)–→2B2O3(s) given the following pertinent information: 1. B2O3 (s) + 3H2O(g)→3O2(g)+ B2H6 (g), AH = +2035 kJ 2. 2B(s) + 3H2 (g)→B2H6 (g), 3. H2 (g) + 글 O2 (g)→H2O(1), 4. H2O(1)→H2O(g), AH = +36 kJ AH: = -285 kJ AĦ¡ = +44 kJ Express your answer with the appropriate units. • View Available Hint(s) ? ΔΗ' Value Units
Hess's law states that "the heat released or absorbed in a chemical process is the same whether the process takes place in one or in several steps." It is important to recall the following Part A rules: 1. When two reactions are added, their enthalpy values are added. 2. When a reaction is reversed, the sign of its enthalpy value changes. Calculate the enthalpy of the reaction 2NO(g) + O2 (g)→2NO2(g) 3. When the coefficients of a reaction given the following reactions and enthalpies of formation: are multiplied by a factor, the enthalpy value is multiplied by that same factor. 1. N2(g) + O2(g)→NO2(g), AH; = 33.2 kJ 2. N2 (g) + ¿O2(g)→NO(g), AH = 90.2 kJ Express your answer with the appropriate units. • View Available Hint(s) AH° = Value Units
Transcribed Image Text:Hess's law states that "the heat released or absorbed in a chemical process is the same whether the process takes place in one or in several steps." It is important to recall the following Part A rules: 1. When two reactions are added, their enthalpy values are added. 2. When a reaction is reversed, the sign of its enthalpy value changes. Calculate the enthalpy of the reaction 2NO(g) + O2 (g)→2NO2(g) 3. When the coefficients of a reaction given the following reactions and enthalpies of formation: are multiplied by a factor, the enthalpy value is multiplied by that same factor. 1. N2(g) + O2(g)→NO2(g), AH; = 33.2 kJ 2. N2 (g) + ¿O2(g)→NO(g), AH = 90.2 kJ Express your answer with the appropriate units. • View Available Hint(s) AH° = Value Units
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