An ideal gas undergoes isothermal expansion at constant pressure. During the process:

Question

An ideal gas undergoes isothermal expansion at constant pressure. During the process:, Enthalpy remains constant but entropy increases, Enthalpy decreases but entropy increases, Enthalpy increases but entropy decreases, Both enthalpy and entropy remain constant

MARKS App · Accepted Answer

ΔH = nC p ΔT = 0, ∴ ΔT = 0 ∴ P ext = defined so process is irreversible. ΔS = nRln V f /V i ≥ 0

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