Unlike ΔH°_f, S° for a pure element at standard state is
- A
Always 0
- B
Always negative
- C
Equal to ΔH°_f
- Dcheck_circle
Not 0; only S(perfect crystal at 0 K) = 0 (third law)
Explanation
Third law: only a perfect crystal at absolute zero has S = 0.
Absolute Entropy and Entropy Change
AP Chemistry· difficulty 2/5
Want 10 more like this — adaptive to your weak spots?