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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermodynamics Laws & Specific Heats of GasesMedium2 minQB

PhysicsMediumnumerical

In a certain polytropic process the volume of argon is increased $α = 4$ times and the pressure decreased $β = 8$ times. Find the molar heat capacity of argon in this process, assuming it to be a perfect gas.

Answer:

-4.16

Solution:

$P V^{n} = constant$ gives $β = α^{n}$ , so $n = \frac{ln 8}{ln 4} = 1.5$ . $C = C_{v} + \frac{R}{1 - n} = \frac{3}{2} R - 2 R = - \frac{R}{2} = - 4.16$ J $K^{- 1}$ $m o l e^{- 1}$ .

Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermodynamics Laws & Specific Heats of Gases

⏱ 2mℹ️ Source: QB

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