Consider the equilibrium : P ( g ) + 2 Q ( g ) ⇌ R ( g ) . When the reaction is carried out at a certain temperature, the equilibrium concentration of P and Q are 3M and 4M respectively. When the volu

Question

Consider the equilibrium : P ( g ) + 2 Q ( g ) ⇌ R ( g ) . When the reaction is carried out at a certain temperature, the equilibrium concentration of P and Q are 3M and 4M respectively. When the volume of the vessel is doubled and the equilibrium is allowed to be reestablished, the concentration of Q is found to be 3M. Find ratio of molarity of R at new equilibrium with old equilibrium. (Fill your answer by multiplying it by 1000)

TestHub · Accepted Answer

P ( g ) + 2 Q ( g ) ⇌ R ( g ) Old equilibrium : 3 M 4 M xM When volume is doubled 2 3 ​ M 2 4 ​ M 2 x ​ M New equilibrium : 3/2+1/2 2 + 1 2 x ​ − 2 1 ​ ∴ K c ​ = 3 × 4 2 x ​ = 2 × 3 2 ( 2 x ​ − 2 1 ​ ) − ​ ∴ 8 x ​ = 3 ( 2 x ​ − 2 1 ​ ) ​ 3 x = 4 x − 4 x = 4 K C ​ = 12 1 ​

Chemistry - Chemical Equilibrium Question with Solution | TestHub

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