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.
No it tends to depress the freezing point.
Quite often yes unless an azeotrope is formed.
Adding a solute to a solvent will increase the boiling point of that solvent.
raise its freezing point
It increases the boiling point of the solution and it increases the temperature range over which the solution remains a liquid.
the temperature at which the solution freezes is lowered.
A nonvolatile ( not readily evaporated) solute elevates the boiling point of a solvent (the temperature at which the solvent boils) because its presence lowers the vapor pressure of the solvent. * The normal boiling point of a liquid occurs at the temperature where the vapor pressure is equal to 1 atmosphere. * The presence of a nonvolatile solute decreases the number of solvent molecules per unit volume , so less molecules escape form the liquid. Thus the vapor pressure of the solvent decreases. * Therefore, such a solution with lower vapor pressure must be heated to a higher temperature than the boiling point of the pure solvent to reach a vapor pressure of 1 atmosphere.
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.
The solute increases the boiling point of the solvent
Adding a solute to a pure solvent will lower the freezing point, elevate the boiling point, and lower the vapor pressure.
raise its freezing point
solute is which we are mixing and solvent is that in which we are mixing solute
Solutes raise and lower the boiling points of solvents. :)
Boiling point elevation
The effect of a solute on the freezing point and boiling point of a solvent is related to what is known as the colligative property. Upon addition of the solute, the freezing point will be lowered, and the boiling point will be increased. The magnitude of the change will depend on the solute and how many particles it forms upon dissolving, and on the nature of the solvent and the freezing/boiling point constant for that solvent.
RAISE
It increases the boiling point of the solution and it increases the temperature range over which the solution remains a liquid.
When a solute is added to a solvent, the boiling point is raised according to the equation ΔTb=Kbm. Thus, the boiling temperature of a solution can be described by: Tb(solution)=ΔTb + Tb(pure solvent). However, for the purposes of this question, adding a solute increases the boiling point of a solution.
the temperature at which the solution freezes is lowered.
A nonvolatile ( not readily evaporated) solute elevates the boiling point of a solvent (the temperature at which the solvent boils) because its presence lowers the vapor pressure of the solvent. * The normal boiling point of a liquid occurs at the temperature where the vapor pressure is equal to 1 atmosphere. * The presence of a nonvolatile solute decreases the number of solvent molecules per unit volume , so less molecules escape form the liquid. Thus the vapor pressure of the solvent decreases. * Therefore, such a solution with lower vapor pressure must be heated to a higher temperature than the boiling point of the pure solvent to reach a vapor pressure of 1 atmosphere.