For the decomposition of barium carbonate, consider the following thermodynamic data (Due to variations in thermodynamic values for different sources, be sure to use the given values in calculating your answer.): AHxn 243.5kJ/mol ASxn 172.0J/(mol. K) Calculate the temperature in kelvins above which this reaction is spontaneous. Express your answer to four significant figures and include the appropriate units. ► View Available Hint(s) T= Value IMA Submit Part B lationship between free energy and the equilibrium constant e standard free energy change, AG, and the equilibrium constant K for a reaction can be related by the following equation: AG-RT In K Units ere T is the Kelvin temperature and R is equal to 8.314 J/(mol. K). ? The thermodynamic values from part A will be useful as you work through part B: K= Calculate the equilibrium constant for the following reaction at room temperature, 25 °C: Express your answer numerically to three significant figures. ► View Available Hint(s) IVE| ΑΣΦ 3 ? AHxn 243.5kJ/mol AS 172.0J/(mol.K) BaCO3(s)→BaO(s) + CO2(g)
For the decomposition of barium carbonate, consider the following thermodynamic data (Due to variations in thermodynamic values for different sources, be sure to use the given values in calculating your answer.): AHxn 243.5kJ/mol ASxn 172.0J/(mol. K) Calculate the temperature in kelvins above which this reaction is spontaneous. Express your answer to four significant figures and include the appropriate units. ► View Available Hint(s) T= Value IMA Submit Part B lationship between free energy and the equilibrium constant e standard free energy change, AG, and the equilibrium constant K for a reaction can be related by the following equation: AG-RT In K Units ere T is the Kelvin temperature and R is equal to 8.314 J/(mol. K). ? The thermodynamic values from part A will be useful as you work through part B: K= Calculate the equilibrium constant for the following reaction at room temperature, 25 °C: Express your answer numerically to three significant figures. ► View Available Hint(s) IVE| ΑΣΦ 3 ? AHxn 243.5kJ/mol AS 172.0J/(mol.K) BaCO3(s)→BaO(s) + CO2(g)
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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Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
Question
Transcribed Image Text:For the decomposition of barium carbonate, consider the following thermodynamic data (Due to variations in thermodynamic values for different sources, be sure to use the given values in calculating your answer.):
243.5kJ/mol
AHxn
AS 172.0J/(mol. K)
Calculate the temperature in kelvins above which this reaction is spontaneous.
Express your answer to four significant figures and include the appropriate units.
► View Available Hint(s)
Submit
T= Value
O
Part B
μA
Relationship between free energy and the equilibrium constant
The standard free energy change, AG, and the equilibrium constant K for a reaction can be related by the following equation:
where I' is the Kelvin temperature and R is equal to 8.314 J/(mol. K).
Units
K =
?
The thermodynamic values from part A will be useful as you work through part B:
Submit
Calculate the equilibrium constant for the following reaction at room temperature, 25 °C:
Express your answer numerically to three significant figures.
► View Available Hint(s)
| ΑΣΦ
?
AG = RT In K
==
AH
AS
243.5kJ/mol
172.0J/(mol. K)
BaCO3(s)→BaO(s) + CO2(g)
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