2.
For the gaseous equilibrium represented below, it is observed that greater amounts of
PCl
and Cl
are produced as the temperature is increased.
3
2
(g) PCl
PCl
(g) + Cl
(g)
5
3
2
a. What is the sign of S for the reaction. Explain.
b. What change, if any, will occur in G for the reaction as the temperature is
increased?
Explain your reasoning in terms of thermodynamic principles.
c. If He gas is added to the original mixture at constant volume and temperature, what
will happen to the partial pressure of Cl
? Explain.
2
d. If the volume of the reaction mixture is decreased at constant temperature to half the
original volume, what will happen to the number of moles of Cl
in the reaction
2
vessel. Explain.
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