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Chemistry

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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1. Using the following reactions, calculate the heat of formation, AH, of CS, using Hess' Law. SHOW ALL YOUR WORK. i. C(s)+0,(g) CO,(g) ii. S(s)+0,(g) SO,(g) iii. CS,()+30,(g) → CO,(g) +2 S0,(g) AH = -393-3 kJ AH = -293.72 kJ AH -1108.76 kJ 2. If 0.250 g of fuel increases the temperature of a calorimeter by 20 °C, and the calorimeter is calibrated at 7.28 kJ/°C, calculate the heat of combustion of fuel per gram. SHOW ALL YOUR WORK. (answer + units)
Transcribed Image Text:1. Using the following reactions, calculate the heat of formation, AH, of CS, using Hess' Law. SHOW ALL YOUR WORK. i. C(s)+0,(g) CO,(g) ii. S(s)+0,(g) SO,(g) iii. CS,()+30,(g) → CO,(g) +2 S0,(g) AH = -393-3 kJ AH = -293.72 kJ AH -1108.76 kJ 2. If 0.250 g of fuel increases the temperature of a calorimeter by 20 °C, and the calorimeter is calibrated at 7.28 kJ/°C, calculate the heat of combustion of fuel per gram. SHOW ALL YOUR WORK. (answer + units)
Date: Name(s): 3. Examine the reaction mechanism found below: A+B, AB, (slow) AB,+C→ AB,C (fast) AB,C+C B,C,+A (fast) B.C.→D+E (fast) Overall equation: a. Draw a circle around any reaction intermediates. b. Draw a box around any species that can be considered a catalyst. c. In the box above, provide the overall equation for this process. d. In the box below, provide the rate law based on this mechanism. Rate law:
Transcribed Image Text:Date: Name(s): 3. Examine the reaction mechanism found below: A+B, AB, (slow) AB,+C→ AB,C (fast) AB,C+C B,C,+A (fast) B.C.→D+E (fast) Overall equation: a. Draw a circle around any reaction intermediates. b. Draw a box around any species that can be considered a catalyst. c. In the box above, provide the overall equation for this process. d. In the box below, provide the rate law based on this mechanism. Rate law:
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