Chemistry - Chemical Equilibrium Question with Solution | TestHub

ChemistryChemical EquilibriumProblems involving KcEasy2 minQB

ChemistryEasysingle choice

40 g of $S O_{3}$ , 25.6 g of $S O_{2}$ and 16 g of $O_{2}$ are present in a 2 litre vessel. The respective active masses will be

Answer:

Solution:

Active mass = moles per litre.

$S O_{3} : 40/80 = 0.5$ mol, so 0.25 M. $S O_{2} : 25.6/64 = 0.4$ mol, so 0.2 M. $O_{2} : 16/32 = 0.5$ mol, so 0.25 M.

Trap: forgetting to divide by the 2 L volume.

Answer: (B).

Stream:JEESubject:ChemistryTopic:Chemical EquilibriumSubtopic:Problems involving Kc

⏱ 2mℹ️ Source: QB

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