You may want to reference (Pages 187 - 190) Section 5.7 whilecompleting this problem.Part AUsing values from Appendix C, calculate the value of AH° for each ofthe following reactions.CaO(s)+ 2HC1(g)→CaCl (s) +H20(g)Express your answer using four significant figures.ΑΣφ?AĦgm =kJSubmitRequest AnswerPart B4FEO(s) + 02 (g)→2FE2O3 (s)Express your answer using four significant figures.ΔΗkJSubmitRequest Answer

To calculate the standard enthalpy change for the below reactions. CaOs+2HClg→CaCl2s+H2Og4FeOs+O2g→2Fe2O3gStandard enthalpy change for the given reaction can be calculated by below formula ΔHrxno=∑ΔfHoProduct−∑ΔfHoReactants(a) CaOs+2HClg→CaCl2s+H2Og Calculate standard enthalpy change for the first reaction. ΔrHo=ΔfHoCaCl2s+ΔfHoH2Og−ΔfHoCaOs−2ΔfHoHClg From the thermodynamic data:ΔfHoCaCl2s=−795.8 KJΔfHoH2Og=−241.82 KJΔfHoCaOs=−635.09 KJΔfHoHClg=−92.31 KJ Substitute it aboveΔrHo=−795.8+−241.82−−635.09−2−635.09ΔrHo=−217.92 KJ (b) 4FeOs+O2g→2Fe2O3g Calculate standard enthalpy change for the first reaction. ΔrHo=2ΔfHoFe2O3s−4ΔfHoFeOs−ΔfHoO2g From the thermodynamic data:ΔfHoFe2O3s=−824.2 KJΔfHoFeOs=−272 KJΔfHoO2g=0 KJ Substitute it aboveΔrHo=2−824.2−4−272−0ΔrHo=−560.4 KJAnswer: Standard enthalpy change for the given reaction are: Part (a): ΔrHo=−217.92 KJ Part (b): ΔrHo=−560.4 KJ Note: Answer may change a little depending upon the where the value of ΔfHo of the compounds taken. ?

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Chemistry

Part A CaO(s) +2HC1(9)→CaCl2(s) +H2O(9) Express your answer using four significant figures. ? ΔΗ- kJ Submit Request Answer Part B 4FEO(s) + O2(9)→2FE2O3(s) Express your answer using four significant figures. Ην ΑΣφ ? ΔΗR kJ

Part A CaO(s) +2HC1(9)→CaCl2(s) +H2O(9) Express your answer using four significant figures. ? ΔΗ- kJ Submit Request Answer Part B 4FEO(s) + O2(9)→2FE2O3(s) Express your answer using four significant figures. Ην ΑΣφ ? ΔΗR kJ

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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Concept explainers

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.

Question

You may want to reference (Pages 187 - 190) Section 5.7 while
completing this problem.
Part A
Using values from Appendix C, calculate the value of AH° for each of
the following reactions.
CaO(s)+ 2HC1(g)→CaCl (s) +H20(g)
Express your answer using four significant figures.
ΑΣφ
?
AĦgm =
kJ
Submit
Request Answer
Part B
4FEO(s) + 02 (g)→2FE2O3 (s)
Express your answer using four significant figures.
ΔΗ
kJ
Submit
Request Answer

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