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The solute molecules mixed with the solvent molecules in a solution cause the of a solution to be higher than it is for an equal volume of pure solvent?
Kclark71
When a nonvolatile solute is added to a liquid to form a solution, the vapor pressure above that solution decreases. To understand why that might occur, let's analyze the vaporization process of the pure solvent then do the same for a solution. Liquid molecules at the surface of a liquid can escape to the gas phase when they have a sufficient amount of energy to break free of the liquid's intermolecular forces. That vaporization process is reversible. Gaseous molecules coming into contact with the surface of a liquid can be trapped by intermolecular forces in the liquid. Eventually the rate of escape will equal the rate of capture to establish a constant, equilibrium vapor pressure above the pure liquid.
If we add a nonvolatile solute to that liquid, the amount of surface area available for the escaping solvent molecules is reduced because some of that area is occupied by solute particles. Therefore, the solvent molecules will have a lower probability to escape the solution than the pure solvent. That fact is reflected in the lower vapor pressure for a solution relative to the pure solvent. That statement is only true if the solvent is nonvolatile. If the solute has its own vapor pressure, then the vapor pressure of the solution may be greater than the vapor pressure of the solvent.
Note that we did not need to identify the nature of the solvent or the solute (except for its lack of volatility) to derive that the vapor pressure should be lower for a solution relative to the pure solvent. That is what makes vapor pressure lowering a colligative property--it only depends on the number of dissolved solute particles.
summarizes our discussion so far. On the surface of the pure solvent (shown on the left) there are more solvent molecules at the surface than in the right-hand solution flask. Therefore, it is more likely that solvent molecules escape into the gas phase on the left than on the right. Therefore, the solution should have a lower vapor pressure than the pure solvent.Figure %: The Vapor Pressure of a Solution is Lower than that of the Pure Solvent
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∙ 11y ago
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∙ 11y agodue to vapor quantity of molecules are less in one cubic centimeter than the original liquid molecules in one cubic centimeter
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∙ 13y agosolute, lower.
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∙ 13y agoboiling point
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∙ 13y agoSolute, lower (apex)
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Which is the first step in the dissolving process The solute becomes like the solvent. The solute molecules are carried into the solution. The solvent molecules surround the solute particles. The solv?
The first step in the dissolving process is "The solvent molecules surround the solute particles".
What is a solute and solevent in a saltwater solution?
In a basic saltwater solution, the water molecules would be the solvent and the salt molecules would be the solute.
What is the term for a cluster of solvent molecules surrounding a solute particle in solution?
Solvent Cage
What happen when solutes and solvent are mixed?
when the solute is mixed to the solvent, the solute brakes down and fits into the spaces between the molecules and form a solution
The substance that dissolves in the solvent in a solution?
The substance that is dissolved in a solution is a solute. A solvent is the dissolving medium in a solution.
What is the dissolved particles in the solutions?
Solvent
Which is the first step in the dissolving process The solute becomes like the solvent. The solute molecules are carried into the solution. The solvent molecules surround the solute particles. The solv?
The first step in the dissolving process is "The solvent molecules surround the solute particles".
What is a solute and solevent in a saltwater solution?
In a basic saltwater solution, the water molecules would be the solvent and the salt molecules would be the solute.
What is the term for a cluster of solvent molecules surrounding a solute particle in solution?
Solvent Cage
What happen when solutes and solvent are mixed?
when the solute is mixed to the solvent, the solute brakes down and fits into the spaces between the molecules and form a solution
What is the difference between solvent and solution?
The solvent in a solution is dissolving the solute. A solution is groups of molecules that are mixed in a completely even distribution. Basically a solute dissolved in a solvent. An example of a solvent would be water and a solute could be sugar. The sugar would dissolve in the water which would be a solution.
Are collisions between solvent molecules and solute are more frequent at lower or higher temperatures?
Collisions between solvent molecules and solute are more frequent at higher than lower temperatures.
What 2 solute molecules mixed with the solvent molecules in a solution cause the freezing point of a solution to be than it is for an equal volume of pure?
lower, solvent, lower, solvent
What effect will the addition of a solute to the solvent have on the ability of the solvent molecules to escape from the surface of the solution?
by adding solvent, the ability of solvent molecules to escape(i.e its vapour pressure) will decrease.because the solute particles provide hinderance
What is the difference in a solvent and solute?
The solvent is the majority of the solution. It dissolves the solute. The solute is the lesser amount in the solution. It is spread evenly within the solution so you can't see it. An example is salt water. The solvent would be water, and the solute would be salt. You don't see the salt because it's molecules are spread evenly within the water molecules.
Is chlorine solution compound?
Chlorine solution is a mixture of chlorine molecules (solute) and water (solvent)
What is the relationship between solutes solutions and solvents?
1. A solvent and a solute are both parts of a solution.2. The solvent is mostly in majority and, it dissolves a solute in itself to make a solution.
