A system undergoes a certain change in state by path I and the corresponding heat absorbed and work done are 10 kcal and 0 erg, respectively. For the same change in state by path II, the respective qu

Question

A system undergoes a certain change in state by path I and the corresponding heat absorbed and work done are 10 kcal and 0 erg, respectively. For the same change in state by path II, the respective quantities are 11 kcal and 0.5 w_max, where w_max represents the work done if the changes were reversibly carried out. The magnitude of w_max in J, is (1 cal = 4.2 J)

Answer:

8400.00

Solution:

Path I: Δ U = q - w = 10 - 0 = 10 kcal (state function). Path II: 10 = 11 - 0.5 w_max, so 0.5 w_max = 1 kcal, w_max = 2 kcal = 2000×4.2 = 8400 J. Ans = 8400.

TestHub · Accepted Answer

Path I: Δ U = q - w = 10 - 0 = 10 kcal (state function). Path II: 10 = 11 - 0.5 w max , so 0.5 w max = 1 kcal, w max = 2 kcal = 2000×4.2 = 8400 J. Ans = 8400.

Chemistry - Thermodynamics - I Question with Solution | TestHub

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