Hello newfound chemists! As we are continuing our trek into the study of thermodynamics, it is important to create comparisons that allow you to establish the significance of chemical principles in relationship with each other! Assuming that all of the below are ideal gases, please tell me which has a larger magnitude:

A. qv or qp for the reaction N2 (g) + 3 H2 (g) ——> 2 NH3 Change in H= -92 kJ

B. w for the reaction 3 N2H4 —–> 4 NH3 (g) + N2 (g) at constant pressure

OR w for the reaction 2 H2O (l) —> 2 H2 (g) + O2 (g) at constant pressure

C. Change in Energy or Change in Enthalpy for the reaction: 2 H20 (l)—-> 2 H2 (g) + O2 (g)

* Note that for part C, the reaction is an ENDOTHERMIC reaction and that you can assume it is occurring at constant pressure!

 

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