The degree of dissociation of `PCl_(5) (alpha)` obeying the equilibrium, `PCl_(5)hArrPCl_(3)+Cl_(2)` is related to the pressure at equilibrium by :

Options

A. `a prop P`
B. `a prop (1)/(sqrt(P))`
C. `a prop (1)/(P^(2))`
D. `a prop (1)/(P^(4))`

Explanation

To find the relationship between the degree of dissociation (α) of \( PCl_5 \) and the pressure at equilibrium, we can follow these steps:

### Step 1: Write the equilibrium reaction
The equilibrium reaction for the dissociation of \( PCl_5 \) is:
\[ PCl_5 \rightleftharpoons PCl_3 + Cl_2 \]

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