For the Reaction PCl₅(g) → PCl₃(g) + Cl₂(g) at 298

question 94

Multiple Choice

For the reaction PCl₅(g) → PCl₃(g) + Cl₂(g) at 298 K, Keq = 1.87 × 10^-7, ΔS° = 181.92 J/mol K, what is Keq at 200 K if ΔH° = 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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