Question

Part a write an equation for the formation of nh3(g) from its elements in its standard states. express your answer as a chemical equation. identify all of the phases in your answer. submitmy answersgive up part b find δh∘f for nh3(g) from appendix iib in the textbook. express your answer using three significant figures. δh∘f = kj/mol submitmy answersgive up part c write an equation for the formation of co2(g) from its elements in its standard states. express your answer as a chemical equation. identify all of the phases in your answer. submitmy answersgive up part d find δh∘f for co2(g) from appendix iib in the textbook. express your answer using four significant figures. δh∘f = kj/mol submitmy answersgive up part e write an equation for the formation of fe2o3(s) from its elements in its standard states. express your answer as a chemical equation. identify all of the phases in your answer. submitmy answersgive up part f find δh∘f for fe2o3(s) from appendix iib in the textbook. express your answer using four significant figures. δh∘f = kj/mol submitmy answersgive up part g write an equation for the formation of ch4(g) from its elements in its standard states. express your answer as a chemical equation. identify all of the phases in your answer. submitmy answersgive up part h find δh∘f for ch4(g) from appendix iib in the textbook. express your answer using three significant figures.

Answer 1

A. N₂ (g) + 3 H₂ (g) --> 2 NH₃ (g)
B. The value for standard enthalpy of formation is empirical given that the reactants involved were pure elements. So, you can search this on the internet or in any textbook. The Hf for NH₃ is -46.0 kJ/mol.
C. C (s) + O₂ (g) --> CO₂ (g)
D. The Hf for CO₂ is -393.5 kJ/mol
E. 4 Fe (s) + 3 O₂ (g) --> 2 Fe₂O₃ (s)
F. The Hf for solid Fe₂O₃ is -826.0 kJ/mol.
G. C (s) + 2 H₂ (g) --> CH₄ (g)
H. The Hf for methane gas is -74.9 kJ/mol.

Answer 2

Sourse 

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