NEET2025Chemistry-Thermodynamics
NEET 2025 Chemistry Enthalpy Change MCQ Question
Type: MCQ-conceptual-Medium-Class 11
C(s) + 2H₂(g) → CH₄(g); ΔH = -74.8 kJ mol⁻¹ Which of the following diagrams gives an accurate representation of the above reaction?
[R → reactants; P → products]
Correct Answer
Option A
Detailed Explanation
The reaction is exothermic, so the energy of the products is lower than that of the reactants. Diagram 3 correctly shows this with a downward energy change.
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