Which of the following statements is true regarding non-ideal solutions?

Practice Questions

Q1
Which of the following statements is true regarding non-ideal solutions?
  1. They obey Raoult's Law perfectly.
  2. They show positive or negative deviations from Raoult's Law.
  3. Their vapor pressure is always higher than predicted by Raoult's Law.
  4. They cannot be formed by mixing two volatile liquids.

Questions & Step-by-Step Solutions

Which of the following statements is true regarding non-ideal solutions?
  • Step 1: Understand what a solution is. A solution is a mixture of two or more substances where one substance (the solute) is dissolved in another (the solvent).
  • Step 2: Learn about Raoult's Law. Raoult's Law states that the vapor pressure of a solvent in a solution is directly proportional to the mole fraction of the solvent in the solution.
  • Step 3: Know what non-ideal solutions are. Non-ideal solutions are those that do not follow Raoult's Law perfectly due to interactions between different molecules.
  • Step 4: Recognize that non-ideal solutions can show positive or negative deviations. Positive deviation means the vapor pressure is higher than expected, while negative deviation means it is lower than expected.
  • Step 5: Conclude that the statement about non-ideal solutions showing deviations from Raoult's Law due to molecular interactions is true.
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