For the following reaction in equlibrium
`PCl_(5)(g)hArrPCl_(3)(g)+Cl_(2)(g)`
Vapour density is found to be 100 when 1 mole of `PCl_(5)` is taken in a 10 litre flask at `27^(@)C` Calculate the equlibrium pressure. Also calculate percentage dissociation of `PCl_(3)`

Explanation

To solve the problem step by step, we will follow these steps:

### Step 1: Calculate the Molar Mass of PCl5
The molar mass of PCl5 can be calculated as follows:
- Molar mass of P = 31 g/mol
- Molar mass of Cl = 35.5 g/mol
- Therefore, molar mass of PCl5 = 31 + (5 × 35.5) = 31 + 177.5 = 208.5 g/mol

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