S + 3 2 O 2 → S O 3 + 2 x kcal S O 2 + 1 2 O 2 → S O 3 + y kcal The heat of formation of S O 2 is

S + 3 2 O 2 → S O 3 ; Δ H = - 2 x …(i) S O 2 + 1 2 O 2 → S O 3 ; Δ H = - y …(ii) By equations [(i) – (ii)] S + O 2 → S O 2 ; Δ H = ( y - 2 x ) .

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Chemistry - Thermochemistry Question with Solution | TestHub

ChemistryThermochemistryEnthalpy of ReactionEasy2 minPYQ_2020

ChemistryEasysingle choice

$S + \frac{3}{2} O_{2} \to S O_{3} + 2 x$ kcal
$S O_{2} + \frac{1}{2} O_{2} \to S O_{3} + y$ kcal
The heat of formation of $S O_{2}$ is

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Answer:

Solution:

$S + \frac{3}{2} O_{2} \to S O_{3}; Δ H = - 2 x$ …(i)
$S O_{2} + \frac{1}{2} O_{2} \to S O_{3}; Δ H = - y$ …(ii)
By equations [(i) – (ii)]
$S + O_{2} \to S O_{2}; Δ H = (y - 2 x)$ .

Stream:NTA_ABHYAS_NEETSubject:ChemistryTopic:ThermochemistrySubtopic:Enthalpy of Reaction

⏱ 2mℹ️ Source: PYQ_2020

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