Homework Answers
PCl5 = PCl3 + Cl2
Initial 0.48. 0. 0
Change. -X. +X. + X
Equilibrium. (0.48-X). X X
Total pressure = 0.48+X= 0.80
X = 0.32 ATM
0.48-X = 0.48-0.32= 0.16 ATM
Kp = 0.32×0.32/0.16= 0.64 ATM
Ans= Kp= 0.64atm
2. Conct of SO3 = 11.1/3.8= 2.921 M
2SO3. =. 2SO2. +. O2
Initial. 2.92. 0. 0
Change. -2X. +2X. +X
Equilibrium. 2.92-2X. 2X. X
Concentration of so2 at equilibrium = 3/3.8= 0.78947M
SO3 at equilibrium= 2.92-0.78947= 2.1316 M
O2 at equilibrium= 0.78947/2= 0.3947 M
K= 0.39473×0.78947×0.78957/2.1316×2.1316
=0.054
K= 0.054
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