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The freezing point of a solution is generally higher than the one of a pure solvent.
This is because in a solution, the solvent is in contact with more molecules (the ones of the solute plus the ones of the solvent) thus increasing the Van Der Waals forces between molecules, making it easier for them to stick together as the temperature goes down.
The molecules of the pure solvent don't interact with so many molecules, so the intermolecular forces are not as high as in solution thus making it harder for molecules to change to a solid state, lower temperatures will be needed in order to turn liquid pure solvent into a solid.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoThe freezing point of a solution decreases when a solute is added to it. This phenomenon is commonly seen in colder areas of the country, where salt is added to snow on roads to lower the freezing point of water. The boiling point of a solution also increases when a solute is added to it.
The reason for this has to do with salt ions taking up space in the solution where water molecules otherwise would have been, had there been no solute. Usually when we cool water just below 0 degrees C, the water molecules will attach to each other and make ice. If there are salt ions in the way, it is harder for the water molecules to bond, and so the water must be a bit colder to overcome this effect.
Wiki User
∙ 15y agoYes, since the ions in solution absorb and hold more energy than the pure solvent, more energy needs to be removed to freeze the solution and more added to boil it.
Wiki User
∙ 14y agoA solution has a lower freeazing point compared to pure water.
Wiki User
∙ 14y agoNo. The freezing point for anything that's a solid at room temperature is above room temperature. The freezing point for tungsten is actually quite high.
Wiki User
∙ 13y agoAlmost always. Take water as an example. Dissolve salt in it and the freezing point drops dramatically. Hence gritting when it snows.
Wiki User
∙ 7y agoNo. Dissolved solutes in a solvent will LOWER (not raise) the freezing point of that liquid. It is true, that dissolved solvents will raise the boiling point, however.
Wiki User
∙ 11y agoThe freezing point becomes lower.
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How does adding salt to water affect the temperature?
It does not affect the temperature of the water, but solutes raise the boiling point and lower the freezing point.
How does the addition of solute affect freezing and boiling point and vapor pressure on a solvent?
A non-volatile solute affects increases osmotic pressure. This is a colligative property. There will be a higher osmotic pressure required to prevent the solvent from flowing into the solution because the solvent has a higher chemical potential without solute in it.
The presence of a nonvolatile solute will what the boiling point of a solvent?
RAISE
What happens to the freezing point of pure water when salt is added to it?
it lowers it. impurities lower the melting and raise the boiling point of substances. they also cause the melting point to fall over a range now. for example, water's melting point was initially 0 but upon adding salt it now is -5 to -1 degrees celsius.
Raise waters freezing temperature?
1. Adding various salts to water can raise the freezing point -see News link in Related links below this box 2. Add methanol (according to ISIS, the Science & Technology Council, Oxford, UK.) They say the effect of hydrophobic molecules on water is usually to raise the freezing point, and that, at 150 bar, whilst the atomic concentration of methane dissolved in water is only about 1%, this solution freezes at +14o C. -see ISIS link.
What are two ways that solutes affect the properties of solvent?
Solutes lower the freezing point and raise the boiling point of a solvent! :)
How adding solute changes the properties of a solvent?
Solutes raise and lower the boiling points of solvents. :)
Does adding more solute to a solvent raise its freezing point lower its boiling point raise its boiling point or does not affect its boiling point?
raise its freezing point
What will the nonvolatile solute do to the freezing point of a solvent?
This is the property of freezing point depression and boiling point elevation. This is because of the solute absorbing the energy added to the system to heat its own molecules and so it would require more energy to boil the solvent. Likewise for freezing point depression, the molecules retain more energy.
How does adding salt to water affect the temperature?
It does not affect the temperature of the water, but solutes raise the boiling point and lower the freezing point.
Does adding a solute to a solvent raise the boiling point?
No, generally that would lower the freezing point, not raise it. Salty water freezes at a lower temperature than pure water. And salt can melt ice, which is the same phenomenon.
How does the presence of a solute affect the freezing and boiling points of a solvent?
They usually lower freezing points, think antifreeze. And salt water freezes at a lower temp than fresh, that is why they put salt on ice. And they raise boiling points, think salt in water when making spaghetti. Or, again antifreeze.
What is the effect of salt on the freezing point of water and other liquids?
NaCl (Table Salt) is a solute in H2O, water, the solvent. Solid solutes lower the melting point (freezing point) points and raise the boiling points of liquid solvents. The particles of the salt interfere with the change of state, therefore causing liquid solvents to freeze (and/or melt) at lower temperatures and for liquid to boil at higher temperatures.
How does the addition of solute affect freezing and boiling point and vapor pressure on a solvent?
A non-volatile solute affects increases osmotic pressure. This is a colligative property. There will be a higher osmotic pressure required to prevent the solvent from flowing into the solution because the solvent has a higher chemical potential without solute in it.
The presence of a nonvolatile solute will what the boiling point of a solvent?
RAISE
What substance is used to raise the water freezing point?
Salt
How does salt raises the melting point of water?
It doesn't increase the melting point of ice, instead, it lowers it. When a solute (which is the salt) is added to a solvent (which is what dissolves it), the boiling point is increased while both the freezing and melting points are decreased. This is evident in the boiling point elevation and the freezing/melting point depression system.
