Multiple Choice
For the species in the reaction below, ΔH°f is zero for ________. 2Co (s) + H2 (g) + 8PF3 (g) → 2HCo(PF3) 4 (l)
A) Co (s)
B) H2 (g)
C) PF3 (g)
D) HCo(PF3) 4 (l)
E) both Co(s) and H2 (g)
Correct Answer:

Verified
Correct Answer:
Verified
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