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Questions & Problems 263 nd- What is the value of AH if (a) the equation is multi- plied throughout by 2, (b) the direction of the reac- tion is reversed so that the products become the reactants and vice versa, (c) water vapor instead of liquid water is formed as the product? n? Problems 6.25 The first step in the industrial recovery of zinc from the zinc sulfide ore is roasting, that is, the conver- sion of ZnS to ZnO by heating: 2Zn0(s) + 2SO2(g) AH = -879 kJ/mol 2ZNS(s) + 302(g) mont Calculate the heat evolved (in kJ) per gram of ZnS roasted. islnolso 6.26 Determine the amount of heat (in kJ) given off when 1.26 x 10 g of NO2 are produced according to the equation T 2NO2(g) AH = -114,6 kJ/mol 2NO(g) + O2(g) - %3D Consider the reaction 6.27 2H,O(g) → 2H,(g) + O2(g) AH = 483.6 kJ/mol %3D

Questions & Problems 263 nd- What is the value of AH if (a) the equation is multi- plied throughout by 2, (b) the direction of the reac- tion is reversed so that the products become the reactants and vice versa, (c) water vapor instead of liquid water is formed as the product? n? Problems 6.25 The first step in the industrial recovery of zinc from the zinc sulfide ore is roasting, that is, the conver- sion of ZnS to ZnO by heating: 2Zn0(s) + 2SO2(g) AH = -879 kJ/mol 2ZNS(s) + 302(g) mont Calculate the heat evolved (in kJ) per gram of ZnS roasted. islnolso 6.26 Determine the amount of heat (in kJ) given off when 1.26 x 10 g of NO2 are produced according to the equation T 2NO2(g) AH = -114,6 kJ/mol 2NO(g) + O2(g) - %3D Consider the reaction 6.27 2H,O(g) → 2H,(g) + O2(g) AH = 483.6 kJ/mol %3D

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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Questions & Problems 263 nd- What is the value of AH if (a) the equation is multi- plied throughout by 2, (b) the direction of the reac- tion is reversed so that the products become the reactants and vice versa, (c) water vapor instead of liquid water is formed as the product? n? Problems 6.25 The first step in the industrial recovery of zinc from the zinc sulfide ore is roasting, that is, the conver- sion of ZnS to ZnO by heating: 2Zn0(s) + 2SO2(g) AH = -879 kJ/mol 2ZNS(s) + 302(g) mont Calculate the heat evolved (in kJ) per gram of ZnS roasted. islnolso 6.26 Determine the amount of heat (in kJ) given off when 1.26 x 10 g of NO2 are produced according to the equation T 2NO2(g) AH = -114,6 kJ/mol 2NO(g) + O2(g) - %3D Consider the reaction 6.27 2H,O(g) → 2H,(g) + O2(g) AH = 483.6 kJ/mol %3D
Transcribed Image Text:Questions & Problems 263 nd- What is the value of AH if (a) the equation is multi- plied throughout by 2, (b) the direction of the reac- tion is reversed so that the products become the reactants and vice versa, (c) water vapor instead of liquid water is formed as the product? n? Problems 6.25 The first step in the industrial recovery of zinc from the zinc sulfide ore is roasting, that is, the conver- sion of ZnS to ZnO by heating: 2Zn0(s) + 2SO2(g) AH = -879 kJ/mol 2ZNS(s) + 302(g) mont Calculate the heat evolved (in kJ) per gram of ZnS roasted. islnolso 6.26 Determine the amount of heat (in kJ) given off when 1.26 x 10 g of NO2 are produced according to the equation T 2NO2(g) AH = -114,6 kJ/mol 2NO(g) + O2(g) - %3D Consider the reaction 6.27 2H,O(g) → 2H,(g) + O2(g) AH = 483.6 kJ/mol %3D
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