Chemistry - Thermodynamics - I Question with Solution | TestHub

ChemistryThermodynamics - IFirst law of ThermodynamicsEasy2 minPYQ_2020

ChemistryEasysingle choice

For a given reaction, $Δ H = 35.5 k J m o l^{- 1}$ and $Δ S = 83.6 J K^{- 1} m o l^{- 1} .$ The reaction is spontaneous at : (Assume that $Δ H$ and $Δ S$ do not vary with temperature)

Options:

Answer:

Solution:

$∵ Δ G = Δ H - T Δ S$

For a reaction to be spontaneous, $Δ G = - v e$

i.e., $Δ H < T Δ S$

$∴ T > \frac{Δ H}{Δ S} = \frac{35.5 \times 10^{3} J}{83.6 J K^{- 1}}$

i.e., $T > 425 K$

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

⏱ 2mℹ️ Source: PYQ_2020

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