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Published on: 25/05/2021
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Download CBSE Class 12th Standard CBSE Chemistry question papers, sample papers, important questions, and previous year solved papers in PDF format. Get free study materials, NCERT solutions, and exam preparation resources for Class 12th Standard CBSE Chemistry
Questions + Answers key
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1.
What is the boiling point of an azeotrope of non - ideal solution showing positive deviations as compared to the boiling points of its components ?
2.
What type of liquids form ideal solutions ?
3.
State the formula relating pressure of a gas with its mole fraction in a liquid solution in contact with it.
4.
Define transition temperature in solubility of a solid in a liquid.
5.
What is the effect of temperature on the solubility of sodium sulphate decahyrate ?
1.
The boiling point of such an azeotrope is lower than that of its components.
2.
Liquids having similar structures and polarities.
3.
Acording to Henry's law, Partial pressure of a gas above the solution \(=K_H \times\) mole fraction of the gas in the solution \(\text { or } p_A=K_H \times x_A \text {, where } K_H=\) Henry's constant.
4.
The temperature at which the trend of solubility changes (e.g., first increases and then decreases) is called the transition temperature.
5.
The solubility first first increases upto 32.4oC (called transition temperature) and then decreases.
12th Standard CBSE Syllabus & Materials
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