Apiston–cylinder device initially contains 0.07 m3 of nitrogen gas at 130 kpa and 180°c. the nitrogen is now expanded to a pressure of 80 kpa polytropically with a polytropic exponent whose value is equal to the specific heat ratio (called isentropic expansion). determine the final temperature and the boundary work done during this process.

W=2.95 KJ

T₂=394.35 K

Explanation:

Given that

P₁= 130 KPa

V₁=0.07 m³

T₁= 180°C

P₂=80 KPa

Heat capacity ratio for nitrogen gas

γ=1.4

V₂=0.099 m³

T₂=394.35 K

Work,W

W=2.95 KJ  

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