Activity 2. Standard Entropy (LAS 5.a) Learning Objectives: Substance S° (J/K-mol) 1. Calculate the standard entropy changes of a reaction. 2. Identify the spontaneity of a process based on entropy. Fe 27.3 02 205 What you need: Pen and paper. Fe2O3 87.4 PART A Cao 39.8 What to do: From the table of the standard entropy values, calculate the standard entropy changes for the following reactions at 25°C. Write your answers in a separate sheet of paper. CO2 213.6 CaCO3 92.9 1. CACO, →CaO, +COi) NH3 3(s) 193 2. N +3He →2NH, N2 192 PART B H2 131 What to do: Identify whether the entropy change of the system in each of the following reactions is positive or negative. Write your answers in a separate sheet of paper. HCI 187 Cl2 223 1. 2H +O →2H,O 2. NH,Cl) 2(g) 2(g) » NH. 3(g) + HCI

Activity 2. Standard Entropy (LAS 5.a) Learning Objectives: Substance S° (J/K-mol) 1. Calculate the standard entropy changes of a reaction. 2. Identify the spontaneity of a process based on entropy. Fe 27.3 02 205 What you need: Pen and paper. Fe2O3 87.4 PART A Cao 39.8 What to do: From the table of the standard entropy values, calculate the standard entropy changes for the following reactions at 25°C. Write your answers in a separate sheet of paper. CO2 213.6 CaCO3 92.9 1. CACO, →CaO, +COi) NH3 3(s) 193 2. N +3He →2NH, N2 192 PART B H2 131 What to do: Identify whether the entropy change of the system in each of the following reactions is positive or negative. Write your answers in a separate sheet of paper. HCI 187 Cl2 223 1. 2H +O →2H,O 2. NH,Cl) 2(g) 2(g) » NH. 3(g) + HCI

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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Question

Activity 2. Standard Entropy (LAS 5.a)
Learning Objectives:
1. Calculate the standard entropy changes of a reaction.
2. Identify the spontaneity of a process based on entropy.
Substance
S° (J/K-mol)
Fe
27.3
What you need: Pen and paper.
O2
205
Fe2O3
87.4
PART A
Сао
39.8
What to do: From the table of the standard entropy values, calculate the
standard entropy changes for the following reactions at 25°C. Write your
answers in a separate sheet of paper.
CO2
213.6
CaCO3
92.9
1. CaCO →CaO, +CO2)
NH3
3(s)
(s)
193
2. Nae) +3H →2NH)
2(g)
N2
192
PART B
H2
131
HCI
What to do: Identify whether the entropy change of the system in each of the
following reactions is positive or negative. Write your answers in a separate
sheet of paper.
187
Cl2
223
1. 2H +0re) →2H¸O
2. NH,C → NH + HCI
2(g)
2(g)
3(g)
(),

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