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Chemistry · PYQ NEET UG 2024
हिन्दीThe work done during reversible isothermal expansion of one mole of hydrogen gas at \( 25^\circ\text{C} \) from pressure of \( 20 \text{ atmosphere} \) to \( 10 \text{ atmosphere} \) is:\n(Given \( R = 2.0 \text{ cal K}^{-1}\text{ mol}^{-1} \))
Correct answer · Option 4
-413.14 calories
Explanation
Using the formula \( W = -2.303 nRT \log(\frac{P_1}{P_2}) \), we get \( W = -2.303 \times 1 \times 2 \times 298 \times \log(2) \approx -413.14 \text{ calories} \).
