Chemistry - Thermochemistry Question with Solution | TestHub

ChemistryThermochemistryEnthalpy of ReactionEasy2 minPYQ_2020

ChemistryEasysingle choice

$Δ_{f} U °$ of formation of $C H_{4}$ (g) at certain temperature is -393 kJ $m o l^{- 1}$ . The value of $Δ_{f} H °$ is

Answer:

Solution:

$\underset{(s)}{C} + \underset{(g)}{2 H_{2}} \to \underset{(g)}{C H_{4}}$
$Δ n_{g} = - 1$
$Δ H = Δ U + Δ n_{g} R T$
$Δ n_{g} = - v e$
$Δ H < Δ U$

Stream:NTA_ABHYAS_NEETSubject:ChemistryTopic:ThermochemistrySubtopic:Enthalpy of Reaction

⏱ 2mℹ️ Source: PYQ_2020

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