Colligative properties relative lowering of vapour pressure. As the torrent of water dried up for the first time in thousands of years, it revealed a horrific sight. By spectroscopic test it was found free from sodium. Therefore, relative lowering in vapour pressure is a colligative property. Lowering in the vapor pressure relative lowering in vapor pressure. Free video lectures for engineering entrance exams like iit jee and.
Relative lowering of vapour pressure let us first discuss the meaning of colligative properties. What do you mean by relative lowering of vapour pressure. Solutions 03 i relative lowering of vapour pressure due to non volatile solute colligative property duration. Colligative properties relative lowering of vapour pressure and. Relative lowering of vapour pressure neet questions solved. P a ps relative lowering in vapour pressure of the solution. In consequence, the relative lowering of vapour pressure of a dilute solution of nonvolatile.
Relative lowering of vapour pressure vapour pressure. Pa ps relative lowering in vapour pressure of the solution. The vapor pressure of a solvent in a solution is always lower than the vapor pressure of the pure solvent. This objection does not apply to the vapor pressure lowering, since it can be measured at any. Notesclass 12thclass xii chemistry notesclass xii solutions notesfree notesncert class notes. This article deals with ncert solutions for class 12 chemistry chapter 2.
Colligative properties relative lowering of vapour pressure byjus. One can see that from considering the gibbs free energy change of mixing. In chemistry, colligative properties are those properties of solutions that depend on the ratio of. Ncert solutions for class 12 chemistry chapter 2 free pdf. Chemistry refers to the study of matter and its properties. In the course of an endeavour to determine the osmotic pressure of a solution by measuring the relative lowering of its vapour pressure, we have been led to. Colligative properties are the properties of solutions which rely on solute particles of the solution. Numericals raoults law, relative lowering of vapour. When a non volatile solute is added to a solvent, the vapour pressure of the solution becomes less than that if the solvent. The vapor pressure lowering is directly proportional to the mole fraction of the solute. According to the general definition, those properties of a solution that depend on the number of solute molecules, irrespective of their nature, with respect to the total number of molecules present in the solution are.
Vapor pressure lowering concept chemistry video by. For a solution, relative lowering of vapour pressure, depression of freezing point, elevation in boiling point and osmotic pressure are colligative properties that. When a solute is added to the solvent then vapor pressure of the solvent reduces compared to the pure solvent. Colligative properties chemistry, class 12, solutions. Video lecture on relative lowering of vapour pressure from solution and colligative properties chapter of chemistry class 12 for hsc. Colligative properties and determination of molar mass. Crack neet with online course free trial offer valid till april 11, 2020. P1p1 relative lowering of vapour pressure thus, the relative lowering in vapour pressure depends only on the concentration of solute particles and is independent of their identity.
Numericals raoult s law, relative lowering of vapour pressure online chemistry tutorial iit, cbse chemistry, icse chemistry, engineering and medical chemistry entrance exams, chemistry viva, chemistry job interviews. Vapor pressure lowering is a colligative property of solutions. The law of the relative lowering of vapour pressure was given by a vant hoff b. Relative lowering of vapour pressure solutions part 6 chemistry. The vapour pressure of a solvent is lowered when a nonvolatile solute is dissolved in it to form a solution. When a non volatile solute is added to a solvent, the vapour pressure of the. If the solution contains more than one nonvolatile solute, then the relative lowering in vapour pressure of a solvent is 12. According to raoults law ps pa pana ps vapour pressure of solution pa vapour pressure of pure solvent na. Solutions 03 i relative lowering of vapour pressure due to non volatile solute colligative property.
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