An equimolar mixture of PCl 3 ( g ) and Cl 2 ( g ) were placed in an evacuated closed vessel of fixed volume at 25 0 ∘ C and the initial total pressure of the gaseous mixture was ' R ' a

Question

An equimolar mixture of PCl 3 ​ ( g ) and Cl 2 ​ ( g ) were placed in an evacuated closed vessel of fixed volume at 25 0 ∘ C and the initial total pressure of the gaseous mixture was ' R ' atm. After some time, the following equilibrium was established in which 75% of PCl 3 ​ ( g ) were converted into PCl 5 ​ ( g ) PCl 3 ​ ( g ) + Cl 2 ​ ( g ) ⇌ PCl 5 ​ ( g ) , K p ​ = 3 1 ​ a t m − 1 Choose the correct option(s):

TestHub · Accepted Answer

0 a mole a mole PCl 5 ​ ( g ) ⇌ PCl 3 ​ ( g ) + C l 2 ​ 4 3 a ​ 4 a ​ 4 a ​ ∴ K P ​ = P PCl 5 ​ ​ P PCl 3 ​ ​ × P Cl 2 ​ ​ ​ = 4 3 ​ a 4 a ​ × 4 a ​ ​ × ( 4 5 ​ a P T ​ ​ ) 3 = 15 P T ​ ​ ⇒ P T ​ = 45 atm . ∵ Volume is constant ∴ P ∝ mole ∴ 45 ∝ 4 5 ​ a ∴ a ∝ 36 atm .

Chemistry - Chemical Equilibrium Question with Solution | TestHub

Options:(select one or more)

Doubts & Discussion