Question

5 moles of $\mathrm { PCl } _ { 5 }$ are heated in a closed vessel of 5 litre capacity. At equilibrium 40% of $\mathrm { PCl } _ { 5 }$ is found to be dissociated. What is the value of ?

• A.
• B. 0.133 M
• C. 2.5 M
• D.

Answer 1

Answer: (A)

Answer 2

: + $\mathrm { Cl } _ { 2 ( \mathrm {~g} ) }$

Initial conc $\frac { 5 } { 5 } = 1$ $\frac { 1 } { 2 }$ 0

At equilibrium $1 - 0.4$ $0.4$ $0.4$