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    General Chemistry Principles
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    Exam 13: Spontaneous Change: Entropy and Gibbs Energy
  5. Question
    For the Reaction PCl<sub>5</sub>(g)→ PCl<sub>3</sub>(g)+ Cl<sub>2</sub>(g)at 298 K,K<sub>eq</sub> = 1
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For the Reaction PCl5(g)→ PCl3(g)+ Cl2(g)at 298 K,Keq = 1

Question 52

Question 52

Multiple Choice

For the reaction PCl5(g) → PCl3(g) + Cl2(g) at 298 K,Keq = 1.87 × 10-7,ΔrS° = 181.92 J/mol K,what is Keq at 200 K if ΔrH° = 92.6 kJ/mol?


A) 2.08 × 10-15
B) 16.8
C) 1.87 × 10-7
D) 5.35 × 106
E) 5.95 × 10-2

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