The number of degrees of freedom at the triple point of water is__________________?
Correct answer: A. 0
- A. 0
- B. 1
- C. 2
- D. 3
Explanation
Gibbs phase rule gives F = C - P + 2 = 1 - 3 + 2 = 0 for water at the triple point. Therefore, neither temperature nor pressure can be varied independently without eliminating one phase.
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