Chemistry - Thermodynamics - I Question with Solution | TestHub

ChemistryThermodynamics - IFirst law of ThermodynamicsEasy2 minPYQ_2020

ChemistryEasysingle choice

The enthalpy of vaporisation of a substances is 840 J $m o l^{- 1}$ and its boiling point is $- 173 ° C$ . Its enthalpy of vaporisation is

Answer:

Solution:

$Δ S_{v a p} = \frac{q_{r e v}}{T} = \frac{Δ H_{v a p}}{T}$
$= \frac{840}{(- 173 + 273) K}$
$= 8.4 J m o l^{- 1} K^{- 1}$ .

Stream:NTA_ABHYAS_NEETSubject:ChemistryTopic:Thermodynamics - ISubtopic:First law of Thermodynamics

⏱ 2mℹ️ Source: PYQ_2020

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