What Is the Sign of ΔH (System)and ΔS (System)if a Chemical

question 9

Multiple Choice

What is the sign of ΔH (system) and ΔS (system) if a chemical reaction is spontaneous only at lower temperatures under standard conditions?

• A) ΔH (system)is negative,and ΔS (system)is negative.
• B) ΔH (system)is positive,and ΔS (system)is positive.
• C) ΔH (system)is positive,and ΔS (system)is negative.
• D) ΔH (system)is negative,and ΔS (system)is positive.
• E) None of these

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