What is the effect of adding a non-volatile solute to a solvent? (2023)

Practice Questions

Q1
What is the effect of adding a non-volatile solute to a solvent? (2023)
  1. Increases vapor pressure
  2. Decreases boiling point
  3. Increases boiling point
  4. Decreases freezing point

Questions & Step-by-Step Solutions

What is the effect of adding a non-volatile solute to a solvent? (2023)
  • Step 1: Understand what a solvent is. A solvent is a substance, usually a liquid, that dissolves a solute.
  • Step 2: Know what a non-volatile solute is. A non-volatile solute is a substance that does not easily evaporate at normal temperatures.
  • Step 3: When you add a non-volatile solute to a solvent, it mixes with the solvent but does not turn into gas.
  • Step 4: This mixing changes how the solvent behaves, especially when it comes to boiling.
  • Step 5: The boiling point is the temperature at which a liquid turns into vapor (gas).
  • Step 6: Adding the non-volatile solute makes it harder for the solvent molecules to escape into the gas phase.
  • Step 7: Because of this, the solution needs to be heated to a higher temperature to boil.
  • Step 8: This phenomenon is called boiling point elevation, which is a colligative property.
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