Q 2.40 Determine the amount of CaCl2 (i = 2.47) dissolved in 2.5 litre of water such that its osmotic pressure is 0.75 atm at 27° C.
Q 2.40 Determine the amount of CaCl2 (i = 2.47) dissolved in 2.5 litre of water such that its osmotic pressure is 0.75 atm at 27° C.
-
1 Answer
-
Given-
Vant Hoff’s factor, I = 2.47
osmotic pressure, π = 0.75 atm
Volume of solution = 2.5L.
To determine the amount of CaCl2, we use vant Hoff’s equation for dilute solutions, given as,
πV = inRT
where, n is the number of moles of solute, R is solution constant which is equal to the gas constant and T is the absolute temperature.
Hence, the amount of CaCl2 dissolved is 3.425g
Similar Questions for you
After the 2023-24 revised CBSE syllabus, many chapters have been removed, and in some chapters syllabus is reduced. As per the latest CBSE exam pattern 2025-26, the Chapter 1 Solutions will be asked for 5-7 marks in the Class 12 Chemistry CBSE board exams.
For other competitive exams, the Solutions chapter has a medium weightage in the NEET exam. In the NEET exam, 1-2 questions are frequently asked based on the concept of moderate-level numerical.
Physical Chemistry holds over 30% weightage in the chemistry section in the JEE Mains exam. The solutions chapter is considered a part of physical chemistry. You can expect 1 question fo
NCERT offers the foundation for every class 12 student. CBSE board exam questions are primarily based on the NCERT exercise, Examples and conceptual explanation.
There are various benefits of using NCERT Solutions.
- Specially for CBSE Board students, these NCERT Solutions are the best resource to prepare for the boards.
- These NCERT Solutions include step-wise descriptive answer approach that will help you write good answers.
- These solutions also help you understand problem-solving and how to approach a specific type of conceptual or numerical problem.
- If you are preparing for the JEE or NEEt exam, these solutions can be your first deci
Shiksha focuses on completely fulfilling the needs of CBSE class 12 board students. We provide NCERT Solutions for classes 11th and 12th in class for physics, chemistry and mathematics.
Here are the key reasons why you should use Shiksha's NCERT Solutions for the Solution Chapter:
- Complete coverage of NCERT Exercise, including MCQs, very short, short and long answer type questions.
- Step-by-step solutions according to the CBSE board exam needs.
- Intext question and answer with a free downloadable PDF
- complete study material for the chapter
- NCERT Chapter 1 Solutions Notes
- Solutions Quick Revision Notes
- Important Questions for Solution
If a solution containing more than 0.9% salt is used, and we place blood cells in it, the water will flow out of the cells, and they will shrink. Such a solution is a hypertonic solution.
Similarly, if a solution contains less than 0.9% salt, the water will flow into the cells, and they will enlarge.
Taking an Exam? Selecting a College?
Get authentic answers from experts, students and alumni that you won't find anywhere else
Sign Up on ShikshaOn Shiksha, get access to
- 65k Colleges
- 1.2k Exams
- 688k Reviews
- 1800k Answers