JEE Main 2019ChemistryChemical EquilibriumMediumMCQ

JEE Main 2019 — Chemical Equilibrium Question with Solution

JEE Main 2019 (12 Jan Shift 1)

Question

Two solids dissociate as follows:

A s⇌B g+C g; KP1=x  atm2

D s⇌C g+E g; KP2=y  atm2

The total pressure when both the solids dissociate simultaneously is:

Choose an option

Show full solutionCorrect option: D
Correct answer
D2x+y atm

Step-by-step explanation



kp1=P1P1+P2

kp2=P2(P1+P2)

kP1+kP2=(P1+P2)2

x+y=(P1+P2)2

P1+P 2=x+y

2(P1+P2)=2x+y

PTotal=PB+PC+PE

=2(P1+P2)=2x+y

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About this question

This is a previous-year question from JEE Main 2019, covering the Chemical Equilibrium chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.