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NEET2008ChemistryThermodynamics (C)Actual

Which of the following are not state functions? (I) q+W (II) q (III) W (IV) H-T S

Options

  1. A(I) and (IV)
  2. B(II), (III) and (IV)
  3. C(I,) (II) and (III)
  4. D(II) and (III)

Correct answer

D. (II) and (III)

Step-by-step solution

Key Idea : State function is the property of the system whose value depends only on the initial and final state of the system and is independent of the path. Internal energy ( E)=q+W It is a state function because it is independent of the path. It is an extensive property. Gibbs energy (G)=H-T S It is also a state function because it is independent of the path. It is also an extensive property. Heat (q) and work (W) are not state functions being path dependent.

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