Chemistry - Thermodynamics - I Question with Solution | TestHub

ChemistryThermodynamics - IHeat & Heat CapacityMedium2 minQB

ChemistryMediumsingle choice

Passage / Comprehension

2 moles of H₂ (g) is taken in a vessel at 0°C and 1 atm, and the vessel is sealed. Now the gas is cooled to –25°C.

What is the change in internal energy of gas ? (Take $C_{v}$ of $H_{2} (g) = \frac{5}{2} R$ )

Answer:

Solution:

$Δ u = nC_{V} Δ T$

$= 2 \times \frac{5}{2} R \times (- 25) = - 125 \times 2 cal = - 250 cal$

Stream:JEESubject:ChemistryTopic:Thermodynamics - ISubtopic:Heat & Heat Capacity

⏱ 2mℹ️ Source: QB

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