4/29/2016 10:55 PM A 000 K 4/25/2016 04:20 PM Gradebook Print Calculator Periodi

Question

4/29/2016 10:55 PM A 000 K 4/25/2016 04:20 PM Gradebook Print Calculator Periodic Table Question 10 of 21 incorrect R Map sapling earning Two moles of an ideal gas undergoes an isothermal transformation from volume Vi to Vi. Express the change in the entropy of the gas in terms of Vi, Vf, and the molar gas constant R. AS 2R Previous Give Up & View Solution Try Again Next Exit Explanation The definition of entropy is, do ds From the First Law of Thermodynamics, dQ dW dU, but for an ideal gas undergoing an isothermal transformation du E 0 since Uis just a function of Tand the temperature doesn't change for this process. For an ideal gas pVE nRT or p nRT V Now integrate ds from Vito Vi to find the change in entropy.

Explanation / Answer

I think you are forgetiing ln

Delta S = n*R*ln (Vf/Vi)

Here n=2

so,
Delta S = 2*R*ln (Vf/Vi)

Related Questions

Navigate

• Browse (All)
• Browse 4
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.