Answer the following problem WITHOUT using 5 % rule then again With using 5% rule.
At 250°C, the Equilibrium constant for the reaction :
1 PCl5 (g) <==> 1 PCl3 (g) + 1 Cl2 (g) K = 2.15
If the PCl5 (g) was initially the only gas present in the reaction vessel at 0.012500 atm, calculate the partial pressure of all the gases after equilibrium has been reached.