Question:
At 25°C and 1 bar which of the following has a non-zero Δ Hf^ ?
At 25°C and 1 bar which of the following has a non-zero Δ Hf^ ?
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Only most stable elemental forms have zero Δ Hf^.
Updated On: Mar 17, 2026
- Br₂(l)
- C (graphite)
- O₃(g)
- I₂(s)
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Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Standard enthalpy of formation is zero for elements in their most stable form. Ozone is not the most stable form of oxygen.
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