Chemistry - Chemical Equilibrium Question with Solution | TestHub
ChemistryChemical EquilibriumDegree of Dissociation/Vapour Density/Molar MassMedium2 minQB
ChemistryMediumsingle choice
For the equilibrium: X2(g) ⇌ 2X(g), the equilibrium constant Kp is related with the degree of dissociation α and the total pressure of gases at equilibrium P as
Options:
Answer:
C
Solution:
Start with 1 mol X2: at equilibrium X2 = 1 - α, X = 2α; total = 1 + α PX2 = [(1-α)/(1+α)]P and PX = [2α/(1+α)]P
Kp = PX2/PX2 = [4α2P2/(1+α)2] × [(1+α)/((1-α)P)]
Kp = 4α2P/[(1-α)(1+α)] = 4α2P/(1-α2)
This is option (c).
Stream:JEESubject:ChemistryTopic:Chemical EquilibriumSubtopic:Degree of Dissociation/Vapour Density/Molar Mass
⏱ 2mℹ️ Source: QB
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