Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is freezing point depression?
💡 Hint: Think about what happens when salt is added to ice.
Question 2
Easy
What does Kf represent?
💡 Hint: Remember, it varies with different solvents.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What happens to the freezing point of a solvent when a non-volatile solute is added?
- It increases
- It remains the same
- It decreases
💡 Hint: Think about what occurs with added salt in winter.
Question 2
True or False: Colligative properties depend on the nature of the solute.
- True
- False
💡 Hint: Remember discussions about solute particle counts.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Determine the molar mass of a solute if a solution containing 1.5 kg of solution, which is 3% by mass of the solute, has a freezing point depression of 1°C. Assume Kf for the solvent is 1.86 K kg mol-1.
💡 Hint: Use the relationships among mass percentage, freezing point depression, and molarity.
Question 2
A chemist dissolves 80 g of a non-volatile solute in 200 g of water. The freezing point of the solution is measured at -2.5 °C. Determine the Kf of water assuming complete solubility.
💡 Hint: Use relationships between freezing point depression and molality.
Challenge and get performance evaluation