Which of the following would have a standard heat of formation ΔH°f, be zero at 25°C? Group of answer choicesC3CC4C2
Question
Solution 1
The standard heat of formation (ΔH°f) is zero for elements in their standard states. The standard state of an element is its most stable physical state (solid, liquid, or gas) at 1 atm and 25°C.
Looking at the options given: C3, C4, and C2, these are all allotropes of carbon.
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