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NEET 2022
Exam
NEET
Year
2022
Subject
Chemistry
Chapter
Thermodynamics (C)

NEET 2022 · Chemistry · Thermodynamics (C)

One mole of an ideal gas at 300 ~K is expanded isothermally from 1...

One mole of an ideal gas at 300 K300 \mathrm{~K} is expanded isothermally from 1 L1 \mathrm{~L} to 10 L10 \mathrm{~L} volume. ΔU\Delta \mathrm{U} for this process is (Use R=8.314 J K−1 mol−1\mathrm{R}=8.314 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1} )

Options

  1. A1260 J1260 \mathrm{~J}
  2. B2520 J2520 \mathrm{~J}
  3. C5040 J5040 \mathrm{~J}
  4. D0 J0 \mathrm{~J}

Correct answer

D. 0 J0 \mathrm{~J}

Step-by-step solution

In an isothermal expansion or compression process, the temperature of system remains constant throughout the process. Since, for an ideal gas, U\mathrm{U} depends only on temperature, it follows that the value of (\Delta U) is zero, during isothermal expansion of gas.
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