6) A 0.160 mol sample of PCls(g) is put in a rigid 1.0 L container at an unknown
temperature. After a period of time, the system comes to equilibrium. A graph
showing the concentration of PCls(g) as a function of time has been plotted
below.
PCls(g) = PC13(g) + Cl2(g)
0.160
Concentration (mol/L)
0.093
[PCI, ]
I
Time
a. What was the concentration of PCls when the system established
equilibrium?
b. Find the concentrations of PCl3 and Cl2 at equilibrium. (Hint: Use an ICE
chart with the initial and equilibrium concentrations of PCI).
c. On the above graph, sketch curves that show how the concentrations of
PClz and Cl, change over time.
d. Calculate the value of the equilibrium constant K for the reaction at this
temperature.
Answers: 2
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6) A 0.160 mol sample of PCls(g) is put in a rigid 1.0 L container at an unknown
temperature. After...
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