Questions: the lower the melting point.

the lower the melting point.
Transcript text: the lower the melting point.
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Solution

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Solution Steps

Step 1: Understand the Relationship Between Intermolecular Forces and Physical Properties

Intermolecular forces (IMFs) significantly influence various physical properties of substances. Stronger IMFs generally result in:

  • Higher boiling points, because more energy is required to separate the molecules.
  • Lower vapor pressures, because fewer molecules can escape into the vapor phase.
  • Higher surface tension, due to stronger cohesive forces at the surface.
  • Higher viscosity, as stronger IMFs hinder the flow of molecules.
Step 2: Analyze the Given Options

We need to determine which statement is false when considering stronger intermolecular forces:

  1. The higher the boiling point.
  2. The lower the vapor pressure.
  3. The lower the melting point.
  4. The higher the surface tension.
  5. The higher the viscosity.
Step 3: Identify the False Statement
  • Boiling Point: Stronger IMFs lead to a higher boiling point.
  • Vapor Pressure: Stronger IMFs result in a lower vapor pressure.
  • Melting Point: Stronger IMFs typically lead to a higher melting point, not lower.
  • Surface Tension: Stronger IMFs increase surface tension.
  • Viscosity: Stronger IMFs increase viscosity.

Final Answer

The statement that makes the given statement false is: \[ \boxed{\text{the lower the melting point.}} \]

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