What is the correct relation between ∆H and intermolecular forces?
Correct answer: B. Higher ∆H, higher intermolecular forces
- A. Higher ∆H weaker intermolecular forces
- B. Higher ∆H, higher intermolecular forces
- C. Lower ∆H, higher intermolecular forces
- D. None of these
Explanation
Option B is the correct answer. The correct relation between ΔH (enthalpy change) and intermolecular force is: higher ΔH corresponds to higher intermolecular force.When the ΔH of a substance is high, it means that a significant amount of energy is required to break the intermolecular forces holding the molecules together. Therefore, substances with higher ΔH values generally have stronger intermolecular forces.
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About Properties of Liquids
Liquid behavior depends on intermolecular forces, which produce surface tension, viscosity, capillary action and a definite volume without a fixed shape. The topic also covers vapor pressure, evaporation, boiling point and the effect of temperature and external pressure, while distinguishing evaporation at the surface from boiling throughout the liquid.
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