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Determine the enthalpy for this reaction: Express your answer in kilojoules per mole to one decimal place. Ca(OH)2 (s) + CO2(g) →CaCO3 (s) + H₂O(1)

Determine the enthalpy for this reaction: Express your answer in kilojoules per mole to one decimal place. Ca(OH)2 (s) + CO2(g) →CaCO3 (s) + H₂O(1)

Chemistry by OpenStax (2015-05-04)
Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Chapter5: Thermochemistry
Section: Chapter Questions
Problem 44E: Although the gas used in an oxyacetylene torch (Figure 5.7) is essentially pure acetylene, the heat...
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Determine the enthalpy for this reaction: Express your answer in kilojoules per mole to one decimal place. Ca(OH)2 (s) + CO2(g) →CaCO3 (s) + H₂O(1)
Transcribed Image Text:Determine the enthalpy for this reaction: Express your answer in kilojoules per mole to one decimal place. Ca(OH)2 (s) + CO2(g) →CaCO3 (s) + H₂O(1)
Enthalpy H is a measure of the energy content of a system at constant pressure. Chemical reactions involve changes in enthalpy, AH, which can be measured and calculated: ΔΗ,xn° = Σproducts mΔΗ;° - Σreactants nΔΗ,° where the subscript "rxn" is for "enthalpy of reaction" and "f" is for "enthalpy of formation" and m and n represent the appropriate stoichiometric coefficients for each substance. The following table lists some enthalpy of formation values for selected substances. Substance AHfᵒ (kJ/mol) CO₂(g) -393.5 Ca(OH)2 (s) -986.1 H₂O(1) -285.8 CaCO3(s) -1207.0 H₂O(g) -241.8
Transcribed Image Text:Enthalpy H is a measure of the energy content of a system at constant pressure. Chemical reactions involve changes in enthalpy, AH, which can be measured and calculated: ΔΗ,xn° = Σproducts mΔΗ;° - Σreactants nΔΗ,° where the subscript "rxn" is for "enthalpy of reaction" and "f" is for "enthalpy of formation" and m and n represent the appropriate stoichiometric coefficients for each substance. The following table lists some enthalpy of formation values for selected substances. Substance AHfᵒ (kJ/mol) CO₂(g) -393.5 Ca(OH)2 (s) -986.1 H₂O(1) -285.8 CaCO3(s) -1207.0 H₂O(g) -241.8
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