1. Tardigrade
  2. Question
  3. Chemistry
  4. When sulphur is heated at 800 K, there exists on equilibrium S 8( g ) leftharpoons 4 S 2( g ). The initial pressure of 1 atm. falls by 20 % at equilibrium. Find the value of K P for the referred reaction

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Q. When sulphur is heated at $800\, K$, there exists on equilibrium $S _{8}( g ) \rightleftharpoons 4 S _{2}( g )$. The initial pressure of $1$ atm. falls by $20 \%$ at equilibrium. Find the value of $K _{ P }$ for the referred reaction

Equilibrium

Solution:

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$K _{ P }=\frac{ p _{S_{2}}^{4}}{ p _{ S _{ 8 }}}=\frac{(0.8)^{4}}{(0.8)} =(0.8)^{3} atm ^{3}$
$=0.512\, atm ^{3}$