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AP EAMCET202124 Aug 2021Morning ShiftChemistryThermodynamics (C)Actual

Which among the following are true for an irreversible isothermal expansion of an ideal gas? (i) W=-Q (ii) U=0 (iii) H 0 (iv) T=0

Options

  1. A(i), (ii) and (iii)
  2. B(i), (ii) and (iv)
  3. C(ii), (iii) and (iv)
  4. D(i), (ii), (iii) and (iv)

Correct answer

B. (i), (ii) and (iv)

Step-by-step solution

In case of isothermal irreversible expansion, the gas is allowed to expand slowly, its temperature tends to fall but some of heat from surrounding is conducted to gas, keeping temperature constant ( T=0) . Internal energy is directly proportional to T . array ll & U=0, H=0 U=Q+W & W=-Q array

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