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5. There Is Carbon Dioxide at Pressure P_(1)=6 Bar and Temperature T_(1)=527^circ C in a Tank of Vol- Ume V=0.5m^3 . How Will the

Вопрос

5. There is carbon dioxide at pressure p_(1)=6 bar and temperature t_(1)=527^circ C in a tank of vol- ume V=0.5m^3 . How will the temperature of the gas change if 436 kJ of heat are removed from it at constant volume?

Решения

4.5 (134 Голоса)
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профессионал · Репетитор 6 лет

Ответ

To solve this problem, we can use the first law of thermodynamics, which states that the change in internal energy of a system is equal to the heat added to the system minus the work done by the system.Given:- Initial pressure, bar- Initial temperature, - Volume, - Heat removed, kJ (negative because heat is removed)We need to find the final temperature, .First, let's convert the initial temperature to Kelvin: Next, we can use the ideal gas law to find the initial number of moles of the gas: Now, we can use the first law of thermodynamics to find the change in internal energy: Since the volume is constant, , so The change in internal energy can also be expressed as: where is the molar specific heat capacity at constant volume.Substituting the values, we get: Now, we can solve for the change in temperature: Finally, we can find the final temperature: Note: The specific heat capacity, , depends on the gas in question. For an ideal monatomic gas, , where is the universal gas constant. For an ideal diatomic gas, .