Question:
In a reaction, if P (product) is at a lower internal energy level than S (substrate), then the reaction is
In a reaction, if P (product) is at a lower internal energy level than S (substrate), then the reaction is
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• Products lower energy → Exothermic
• Products higher energy → Endothermic
Updated On: May 13, 2026
- Endothermic
- Exothermic
- Homothermic
- Exomorphic
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The Correct Option is B
Solution and Explanation
Concept:
The internal energy difference between substrate and product determines whether energy is released or absorbed.
• If products have lower energy than substrates → energy is released
• If products have higher energy → energy is absorbed
Step 1: Analyzing the given condition.
• Product (P) has lower internal energy than substrate (S)
• Excess energy is released during the reaction
Step 2: Interpreting the type of reaction.
• Energy release → Exothermic reaction
Step 3: Selecting the correct answer.
Thus, the reaction is exothermic.
• If products have lower energy than substrates → energy is released
• If products have higher energy → energy is absorbed
Step 1: Analyzing the given condition.
• Product (P) has lower internal energy than substrate (S)
• Excess energy is released during the reaction
Step 2: Interpreting the type of reaction.
• Energy release → Exothermic reaction
Step 3: Selecting the correct answer.
Thus, the reaction is exothermic.
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