Exercise Use IF-test function to state whether a reaction temperature make a systemspontaneous or non-spontaneous.CaCO2(s)CaO(s)+CO2(g)AH = 140 kJ/mol, AS = 161 J/KTemp. (°C) Temp. (K) spont. vs. non-spont.250300350400450500550600650700750800850Hints:1. AGAH-T AS= IF (AG°<0, "spontaneous", "non-spontaneous")Q1) At what temperature does the reaction become spontaneous?a. 550°C b. 600°C c. 650°C d. 250°C e. 850°Chap Q2) At which temperature the Gibbs free energy is negative?a. 400°C b. 550°C c. 800°C d. 500°C e. 300°C

Given : reaction and thermodynamic data

Q1) At what temperature does the reaction become spontaneous? a. 550°C b. 600°C c. 650°C d. 250°C e. 850°C Q2) At which temperature the Gibbs free energy is negative? a. 400°C b. 550°C c. 800°C d. 500°C e. 300°C

Q1) At what temperature does the reaction become spontaneous? a. 550°C b. 600°C c. 650°C d. 250°C e. 850°C Q2) At which temperature the Gibbs free energy is negative? a. 400°C b. 550°C c. 800°C d. 500°C e. 300°C

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

Exercise Use IF-test function to state whether a reaction temperature make a system
spontaneous or non-spontaneous.
CaCO2(s)
CaO(s)+CO2(g)
AH = 140 kJ/mol, AS = 161 J/K
Temp. (°C) Temp. (K) spont. vs. non-spont.
250
300
350
400
450
500
550
600
650
700
750
800
850
Hints:
1. AGAH-T AS
= IF (AG°<0, "spontaneous", "non-spontaneous")
Q1) At what temperature does the reaction become spontaneous?
a. 550°C b. 600°C c. 650°C d. 250°C e. 850°C
hap Q2) At which temperature the Gibbs free energy is negative?
a. 400°C b. 550°C c. 800°C d. 500°C e. 300°C

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