For the Reaction, PCl₅ (G) PCl 3 (G)

question 83

Multiple Choice

For the reaction, PCl₅ (g) PCl 3 (g) + Cl₂ (g) , D H = +92.5 kJ and D S = +182 J/K at 25 C. If D H and D S do not change with temperature, this reaction is spontaneous:

• A) if T > 0.508 K
• B) if T > 508 K
• C) if T > 1.93 K
• D) if T > 274 K
• E) if T < 274 K

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