24. Which of the following statements regarding the third law of thermodynamics

Question

24.       Which of the following statements regarding the third law of thermodynamics is

incorrect?

(a)The absolute S is zero at 0 Kelvin.

(b)The absolute S at 298 K can be positive or negative.

(c)Pure substances have positive absolute S at T > 0 Kelvin.

(d)Absolute zero gives a reference point for determining absolute S.

(e)The absolute S is greater at 300 K than 100 K for a given substance.

  25.     Which one of the following reactions has a positive entropy change?

            (a) H2O(g)    

Explanation / Answer

24 (b)The absolute S at 298 K can be positive or negative

25.... (e) 2NH4 NO3(s)    

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