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Out of boiling point (I), entropy (II), pH (III), and density (IV), which are intensive properties?

1. I, II
2. I, II, III
3. I, III, IV
4. All of these

Correct answer: I, III, IV

Solution

Intensive properties are independent of the amount of matter: boiling point (I), pH (III), and density (IV) are all intensive. Entropy (II) is extensive because it scales with the number of molecules/moles in the system.

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