As shown in P-T diagram below, an ideal gas is expanded adiabatically from state (1) to final state (2), if the process is reversible, the final state is (3) if process is irreversible. Then identify the correct statement(s):

Engineering

Chemistry

First Law and Various Process

Question

ΔU_irreversible < ΔU_reversible

|W_irreversible| < |W_reversible|

|W_irreversible| > |W_reversible|

V₃ > V₂

LiveFree JEE Main Previous Year Online Papers Live Free JEE Advance Previous Year Online Papers

College PredictorLive

Know your College Admission Chances Based on your Rank/Percentile, Category and Home State.

Get your JEE Main Personalised Report with Top Predicted Colleges in JoSA

(T_irr.)_adi. > (T_rev.)_adi. ....(i)
as P_f = P₂ =same for both
so T_f α V_f ⇒ V₃ > V₂
as 21^st relation valid so (V_f)_{irr. adia.} > (V_f)_{rev. adia.}
in given graph as ΔT_{irr. adia.} < ΔT_{rev. adia.}
|w_{irr. adia.}| < |w_{rev. adia.}|
|ΔU_irr.| < |ΔU_rev.|
|w| = nC_vΔT
ΔU = nC_vΔT = negative
so with sign
ΔU_irr > ΔU_rev

Please subscribe our Youtube channel to unlock this solution.