Question

for which of the following substance ∆f H° is zero​

Answer 1

Solution: ΔHf° is not zero for which one of the following:

O­2(g)

C (graphite)

F2(s)

H2(g)

Br­2(l)

Solution: ΔHf° is not zero for which one of the following: O­2(g) C (graphite) F2(s) H2(g) Br­2(l)