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When S in the form of S(8) is heated at ...

When `S` in the form of `S_(8)` is heated at `900 K`, the initial pressure of `1 atmosphere` falls by `29%` at equilibrium. This is because of conversion of some `S_(8)` to `S_(2)`. Find the `K_(p)` for reaction.

Text Solution

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`{:(,S_(8)(g)" " hArr" " 4S_(2)(g)),("Initial mole "," 1 0 "),("At eqm.",1-0.29=0.71" "4xx0.29=1.16):}`
Now, `K_(p)=([Ps_(2)]^(4))/([Ps_(8)])=((1.16)^(4))/(0.71)=2.5582"atm"^(3)`
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