JEE Main 2019ChemistryChemical EquilibriumChemical Equilibrium Law Of Mass Action And Equilibrium ConstantmediumMCQ
JEE Main 2019 — Chemical Equilibrium Question with Solution
From: JEE Main 2019 (Online) 12th January Morning Slot
Question
Two solids dissociate as follows –
The total pressure when both the solids dissociated simultaneously is -
This question includes a diagram. The text above accompanies the figure.
Choose an option
▸Show full solutionCorrect option: C
Correct answer
C2(x+y) atm
Step-by-step explanation
Kp1 = P1(P1 + P2)
Kp2 = P2(P1 + P2)
∴ Kp1 + Kp2 = (P1 + P2)2
⇒ x + y = (P1 + P2)2
⇒ (P1 + P2) = x+y .....(1)
Now total pressure
PT
= PC + PB + PE
= (P1
+ P2) + P1 + P2
= 2(P1 + P2)
= 2x+y [From equation (1)]
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