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What is osmotic pressure and why is it important?
Feb 03, 2020 · Also, why osmotic pressure is a Colligative property? The osmotic pressure is proportional to the concentration of solute particles ci and is therefore a colligative property . As with the other colligative properties , this equation is a consequence of the equality of solvent chemical potentials of the two phases in equilibrium.
What is the formula for osmotic pressure?
Feb 23, 2018 · The osmotic pressure method has the advantage over other methods as pressure measurement is around the room temperature and the molarity of the solution is used instead of molality. As compared to other colligative properties, …
Is temperature change a colligative property?
Dec 08, 2021 · Why osmotic pressure is the best colligative property? As compared to other colligative properties, osmotic pressure is the most useful one because it has the advantage of dealing with temperature. It is studied at room temperature while all others are either elevated or reduced temperatures.
What does it mean to have high osmotic pressure?
Jan 13, 2019 · Answers. Osmotic pressure is considered as colligative property because those colligative properties of a solution only depend on the number of dissolved particles.
Why is osmotic pressure preferred over colligative properties?
Answer. Because other colligative properties require abnormal temperature conditions unlike determining by osmotic pressure which is set up at room temperature only. Moreover calculations carried out in the method of osmotic pressure involves molarity instead of molality (which is the case in others).Apr 18, 2018
Why osmotic pressure is the best method?
It is preferred for the macromolecules like proteins as they are unstable at high temperature and polymers have poor solubility. Also, due to their high molecular mass, the only colligative property which has a measurable magnitude is osmotic pressure. Therefore, osmotic pressure method is preferred.Oct 31, 2018
Which colligative property is best and why?
Answer. Osmotic pressure is the best property to determine the molar mass of biomolecules because it contains concentration in terms of molarity.Aug 9, 2018
Which colligative property is the best method?
Osmotic pressure is the best method for the determination of molar mass of proteins and polymers. Because a small amount of solute will produce a much larger change in this quantity than in the boiling point, freezing point, or vapor pressure.
Is osmotic pressure a colligative property?
Osmotic pressure is a 'colligative' property, like freezing point depression, which means that it depends on the number of particles in solution but not on their chemical identity.
Why osmotic pressure is considered as a best colligative property for determination of molecular masses of polymers proteins or macromolecules?
Measurement of osmotic pressure method is preferred for the determination of molar masses of macromolecules such as proteins and polymers because this method has the advantage that is use molarities instead of molalities . Secondly , the changes observed in these properties are very small .Dec 7, 2019
Why osmotic pressure is better technique for determination of molar mass of biomolecules?
1 Answer. Osmotic pressure is better technique for the determination of molar mass of biomolecules because they are generally not stable at higher temperatures and have poor solubility.May 26, 2019
Which colligative property is best for determining molecular mass?
Osmotic pressureOsmotic pressure is the colligative property used to determine the molecular masses of polymer.
Which colligative property is preferred for the molecular mass determination of macromolecules and why?
Osmotic pressure measurementOsmotic pressure measurement is preferred for molar mass determination because : a even in dilute solution the osmotic pressure values are appreciably high and can be measured accurately.
Which colligative property is more useful to determine the molecular weight of the substances like proteins and polymers?
The technique of osmotic pressure for determination of molar mass of solute is particular useful for proteins as they are not stable at high temperature and polymers have poor solubility.
Which of the following colligative properties is most suitable for the determination of molecular masses of proteins and polymers?
Osmotic pressure methodOsmotic pressure method is especially suitable for the determination of molecular masses of macromolecules such as protein & polymer because for these substances the value of other colligative properties such as elevation in boililng or depression in freezing point are too small to be measured on the hand osmotic ...Apr 28, 2020
How to demonstrate the importance of colligative properties?
The best way to demonstrate the importance of colligative properties is to examine the consequences of Raoult's law. Raoult found that the vapor pressure of the solvent escaping from a solution is proportional to the mole fraction of the solvent. But the vapor pressure of a solvent is not a colligative property.
What are the two types of physical properties?
Physical properties can be divided into two categories. Extensive properties (such as mass and volume ) depend on the size of the sample. Intensive properties (such as density and concentration) are characteristic properties of the substance; they do not depend on the size of the sample being studied. This section introduces a third category that is a subset of the intensive properties of a system. This third category, known as colligative properties, can only be applied to solutions. By definition, one of the properties of a solution is a colligative property if it depends only on the ratio of the number of particles of solute and solvent in the solution, not the identity of the solute.
What does P mean in chemistry?
P = vapor pressure of the solvent in a solution . When the temperature of a liquid is below its boiling point, we can assume that the only molecules that can escape from the liquid to form a gas are those that lie near the surface of the liquid.
Is vapor pressure a colligative property?
But the vapor pressure of a solvent is not a colligative property. Only the change in the vapor pressure that occurs when a solute is added to the solvent can be included among the colligative properties of a solution.
What happens when a solute is added to a solvent?
When a solute is dissolved in a solvent, the number of solvent molecules near the surface decreases, and the vapor pressure of the solvent decreases.
What is triple point?
When phase diagrams were introduced, the triple point was defined as the only combination of temperature and pressure at which the gas, liquid, and solid can exist at the same time. The figure above shows that the triple point of the solution occurs at a lower temperature than the triple point of the pure solvent.
What is the function of a pig's bladder?
In 1784, the French physicist and clergyman Jean Antoine Nollet discovered that a pig's bladder filled with a concentrated solution of alcohol in water expanded when it was immersed in water. The bladder acted as a semipermeable membrane , which allowed water molecules to enter the solution, but kept alcohol molecules from moving in the other direction. Movement of one component of a solution through a membrane to dilute the solution is called osmosis, and the pressure this produces is called the osmotic pressure () .