[Olympiad] For a specific reaction, ΔH = -100 kJ/mol and ΔS = -200 J/mol·K. Below what temperature (in Kelvin) will the reaction be spontaneous?
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200 K
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400 K
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500 K
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1000 K
📝 Detailed explanation
Spontaneity requires ΔG < 0. ΔG = ΔH - TΔS.
-100,000 - T(-200) < 0
-100,000 + 200T < 0
200T < 100,000
T < 500 K.
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