Project ForgeProcess Calculations
Laws of Thermodynamics
GATE 2015
Medium
Three identical closed systems of a pure gas go from (T1,P1) to (T2,P2) via different paths. Which is ALWAYS TRUE for all three?
- AΔU, ΔS, Q are same
- BW, ΔU, ΔG are same
- CΔS, W, Q are same
- ΔG, ΔU, ΔS are same
Explanation
ΔU, ΔS, and ΔG are all state functions, depending only on initial/final states, so they're identical for any path. Q and W are path-dependent.
Source: GATE CH 2015 (2015)
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