A quantity of 8 g oxygen gas is expanded isothermally at from to at a constant external pressure of — Thermodynamics and Thermochemistry Chemistry Question
Question
A quantity of 8 g oxygen gas is expanded isothermally at $27^\circ\text{C}$ from $2\text{ dm}^3$ to $8\text{ dm}^3$ at a constant external pressure of 4 bar. If the magnitude of work done in this process is used in lifting body of mass 40 kg, the height (in meter) up to which the body can be lifted is ($g = 10\text{ m s}^{-2}$)
Answer: 6
💡 Solution & Explanation
Irreversible isothermal expansion work $W = -P_{\text{ext}} (V_2 - V_1) = -4\text{ bar} \times (8 - 2)\text{ L} = -24\text{ bar-L}$. Since $1\text{ bar-L} = 100\text{ J}$, $
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