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ChemistryChemical EquilibriumProblems involving KpEasy2 minQB

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Passage / Comprehension

Solid NH₄HS is heated at 100 °C in a closed vessel; the equilibrium is NH₄HS(s) ⇌ NH₃(g) + H₂S(g), with Kp = 0.36 atm². Assume the vessel initially contains no gaseous ammonia or hydrogen sulfide and solid remains at equilibrium.

Find the total pressure of the gas mixture at equilibrium.

Options:

Answer:

Solution:

Equal amounts of $N H_{3}$ and $H_{2} S$ form, so their partial pressures are equal to $p$ . Since $K_{p} = p^{2} = 0.36 at m^{2}$ , $p = 0.6 atm$ . Total pressure is $2 p = 1.2 atm$ .

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

⏱ 2mℹ️ Source: QB

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