Two moles of an ideal gas expand freely and isothermally from 5 dm^3 to 50 dm^3 . What is the value of H ?

MHT CET 2023 Chemistry question

Two moles of an ideal gas expand freely and isothermally from 5 to 50 . What is the value of ?

(A)Zero kJCorrect
(B)20 kJ
(C)100 kJ
(D)150 kJ

Answer: (A)

Solution

For an ideal gas the internal energy depends only on temperature, and so does the enthalpy since . In an isothermal process , so and $Δ H = Δ U + Δ(PV) =

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Question ID VK-097887