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NEET2020ChemistryThermodynamics (C)Actual

The correct option for free expansion of an ideal gas under adiabatic condition is

Options

  1. Aq = 0 , ΔT < 0 and w > 0
  2. Bq < 0 , ΔT = 0 and w = 0
  3. Cq > 0 , ΔT > 0 and w > 0
  4. Dq = 0 , ΔT = 0 and w = 0

Correct answer

D. q = 0 , ΔT = 0 and w = 0

Step-by-step solution

Free expansion of ideal gas P ext = 0 w pv = 0 q = 0 (adiabatic process) ΔE = q + w ΔE = 0 ΔE = nC V ΔT = 0 q = 0 ,   ΔT = 0 ,   w = 0

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