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FAQ on Colligative Properties in JEE

colligative properties

Joint Entrance Examination (JEE), conducted by the National Testing Agency (NTA) is one of the most glorified examinations in our country conducted for admissions to various engineering colleges in India. Every student tries his/her level best to come up with the best results in this examination. Chemistry is one of the most scoring subjects to enhance one’s rank in JEE. According to the JEE syllabus, chemistry is widely branched into three categories: inorganic chemistry, organic chemistry and physical chemistry. Of all these branches, physical chemistry is the one where most questions asked are of a numerical type. Hence, you have to practice the topics included in it to minimize the time taken to solve the questions. Colligative property of solutions is an important topic in physical chemistry to prepare for JEE.

Important Questions For Colligative Properties

Some FAQs related to colligative properties of solutions are underlined below:

Question: What are some of the important topics to cover in “colligative properties”?

Answer: According to the JEE syllabus, important topics in colligative properties of solutions include:

  • Relative lowering of the vapour pressure of the solvent.
  • Depression in freezing point of the solvent.
  • Elevation in the boiling point of the solvent.
  • The osmotic pressure of the solution.
  • Van ’t Hoff Factor.

Question: What are the important laws governing the colligative properties of solutions?

Answer: The basic law governing the colligative properties of solutions is Raoult’s law. Raoult’s law explains the relationship between the vapour pressure of the solution, mole fraction and vapour pressure of the solvent. This can be given as:

p1= x1p1o

Where,

p1 = vapour pressure of solution

x1 = mole fraction of solvent

p1o= vapour pressure of the solvent

The law lays the fundamentals for the relative lowering of vapour pressure and further to the elevation in boiling point and depression in freezing point. From JEE point of view, it is also very important to know the limitations associated with the applicability of this law.

Questions: Which reference books can one follow for “colligative properties”?

Answer: For colligative properties, one must go through the NCERT class 12th chemistry textbook part-1. A brisk walk through this chapter from NCERT not only gives you a sound idea of the various topics you need to cover according to the JEE syllabus but also develops the fundamentals regarding the chapter. Apart from this, you can follow a reference book to practice questions on this topic from the authors and publications like Peter Atkins, R.C. Mukherjee, Arihant Publication, etc. or from the books containing previous year JEE questions.

For further details related to JEE chemistry, get in touch with our mentors here at BYJU’S.

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