Which of the following statements about ideal solutions is true?
Practice Questions
1 question
Q1
Which of the following statements about ideal solutions is true?
They obey Raoult's law at all concentrations
They have a constant boiling point
They have a constant density
They do not exhibit colligative properties
Ideal solutions obey Raoult's law at all concentrations, meaning their vapor pressures are proportional to the mole fractions.
Questions & Step-by-step Solutions
1 item
Q
Q: Which of the following statements about ideal solutions is true?
Solution: Ideal solutions obey Raoult's law at all concentrations, meaning their vapor pressures are proportional to the mole fractions.
Steps: 5
Step 1: Understand what an ideal solution is. An ideal solution is a mixture of two or more substances that behaves in a predictable way according to certain rules.
Step 2: Learn about Raoult's law. Raoult's law states that the vapor pressure of a solvent in a solution is proportional to the mole fraction of the solvent in that solution.
Step 3: Know that in an ideal solution, the interactions between different molecules are similar to the interactions between like molecules. This means that the solution behaves ideally.
Step 4: Realize that because of this similarity in interactions, ideal solutions follow Raoult's law at all concentrations. This means that the vapor pressures of the components in the solution can be calculated using their mole fractions.
Step 5: Conclude that the statement 'Ideal solutions obey Raoult's law at all concentrations, meaning their vapor pressures are proportional to the mole fractions' is true.
