5 Flashcards
The standard heat of reaction is 0 for ideal gas reaction
F
The standard heat of reaction has accounted for the heat effects due to mixing of the various reactant and product species in the reaction
F
The standard heat of formation is 0 for all elements
T
When a substance is at its std state, its temperature is 298 K
F…no requirement for temp, just pure substance and P=1 bar
For a given rxn that occurs at a const volume, the ΔH° is always equal to ΔU°
F
The ΔS° of a reaction equals ΔH°/T, where ΔH° is the std heat of the rxn
F…not all reactions are reversible
Exothermic reaction occuring in an adiabatic reactor will result in a maximum temperature
T
The 3rd law of thermodynamics tels us that all U, G, and S are - for any substance at 0K
F… only entropy is 0
The 3rd law of thermodynamics applies to both elements and compounds
T
