Chemistry - Thermochemistry Question with Solution | TestHub

ChemistryThermochemistryEnthalpy of ReactionMedium2 minQB

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For 1 mole of monoatomic gas. Calculate $Δ H$ .

Answer:

Solution:

For ideal gas:

$Δ H = n C_{p} Δ T$

For 1 mole monoatomic gas:

$C_{P} = \frac{5 R}{2}$

From graph:

$T_{1} = 300 K, T_{2} = 400 K$

$Δ T = 400 - 300 = 100 K$

Substituting,

$\displaylines Δ H = 1 \times \frac{5 R}{2} \times 100 Δ H = 250 R$

Hence, Correct option = (A).

Stream:JEESubject:ChemistryTopic:ThermochemistrySubtopic:Enthalpy of Reaction

⏱ 2mℹ️ Source: QB

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