In the reaction below, ΔH°_f is zero for ________. Ni (s) + 2CO (g) + 2PF₃ (g) → Ni(CO)₂(PF₃)₂ (l) A)Ni (s) B)CO (g) C)F₃ (g) D)Ni(CO)₂(PF₃)₂ (l) E)both CO (g)and PF₃ (g)

Question

Quizplus · Accepted Answer

ΔH°_f is the standard heat of formation, which is the enthalpy change when one mole of a compound is formed from its elements in their standard states. In this reaction, Ni (s) is not a compound and is already in its standard state, so its ΔH°_f is zero.

In the Reaction Below, ΔH°f Is Zero for ________

In the Reaction Below, ΔH°_f Is Zero for ________