Answer to Question #175055 in General Chemistry for JohnDoe

Question #175055

41-45. Calculate the ∆H0rxn for the reaction C (graphite) + 2H2(g)→CH4(g) From the following enthalpy changes:

C(graphite) + O2(g)→CO2(g)

2H2(g) + O2(g)→2H20(l)

CH4(g) + 2O2(g)→CO2(g) + 2H2O(l)

∆ = -393.5kJ ∆ = -571.6kJ ∆ = -890.4kJ


1
Expert's answer
2021-03-29T06:29:10-0400

To get the "\\Delta H" ;


"=(-393.5+-571.6 - (- 890))kJ\/mol."


"=-75.1kJ"


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