The freezing point decreases when salt is added. What is interesting is that if you continue to cool salty water and you do it slow enough the dissolved solids (salt is one) will migrate outside of the chrystaline structure. Wash away the salt from the outside of an ice cube for example, and the remaining water in the cube will contain much less salt. A simple way to remove a small amount of salt from drinking water.
The water molecules break down the salt crystals and diffuse the molecules amongst themselves, and the salt crystals bind between the water molecules. It takes a lower temperature for the water molecules to overcome the salt molecules hold on them and come together to form a massive ice crystal that interlocks the salt molecules, as the salt is working as a impurity that makes it more difficult for the water molecules to naturally align.
The temperature at which nucleation will occur is lower. Translation: The freezing/melting point of the system is decreased because of the interference of the salt ions. The salt ions become interposed between the water molecules, making it more difficult for them to nucleate (aggregate or freeze) to form crystals.
yes. Adding salt makes it harder for the water molecules to form crystals.
I don't know how much it is affected, by yes it is affected. I would say insignificantly though.
32 deg fah +++ (That's the freezing-point of pure water.) Adding antifreeze lowers the freezing-point, to a temperature depending on the make and dilution - the values for a specific anti-freeze will be on its container label.
The motivation is to decrease thr freezing point.
the temperature at which the solution freezes is lowered.
Adding a salt to a substance changes its boiling and freezing points, but it lowers its freezing point and raises its boiling point. So, salt water actually takes more heat to boil because the salt has raised the boiling point.
It lowers the freezing point.
because salt lowers the freezing point of water.
Adding salt to water the freezing point decrease.
The dependent variable would be the freezing point of the solution.
I don't know how much it is affected, by yes it is affected. I would say insignificantly though.
It lowers the freezing point.
32 deg fah +++ (That's the freezing-point of pure water.) Adding antifreeze lowers the freezing-point, to a temperature depending on the make and dilution - the values for a specific anti-freeze will be on its container label.
An impurity, such as salt lowers the freezing point of water by interfering with the lattice structure water makes with hydrogen bonding at it's freezing point.
Adding salt to water lowers its freezing point by an amount that is dependent on the salt concentration. A saturated solution, for instance, will have a freezing point of about -20ºC compared with 0ºC for pure water. In any case, pure water will freeze earlier than salt water, because pure water has a higher freezing point.
because it lowers the freezing point
Salt increases the boiling point of water and lowers its freezing point.
It lowers the freezing point and raises the boiling point of water.