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A process will be spontaneous at all temperatures if :

1. Δ H < 0 and Δ S > 0
2. Δ H < 0 and Δ S < 0
3. Δ H > 0 and Δ S < 0
4. Δ H > 0 and Δ S > 0

Correct answer: Δ H < 0 and Δ S > 0

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