When urea is added to water the freezing point is decrease why?
This is a colligative property. Adding a solute will increase the boiling point and decrease the freezing point. The reason has to due with intermolecular forces, and interruption thereof. When water molecules have solute in between them, the temperature has to be lower than normal in order for them to freeze.
How does adding salt affect the freezing point of water and what is the procedure of this experiment?
How does increasing the concentration of a nonvolatile solute in water affect the freezing point and osmotic pressure?
Freezing point depression is not a medical term, but a term of physics. It refers to the scientific concept of when the freezing point of a liquid is lowered by adding something to it. For example: The freezing point of water is 0 degrees Celcius, but if salt is added to water, the freezing point is lower, and will still be a liquid at 0 degrees.
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.
Salt works by lowering the melting or freezing point of water. The effect is termed 'freezing point depression'. http://en.wikipedia.org/wiki/Freezing-point_depression When you add salt to water, you introduce dissolved foreign particles into the water. The freezing point of water becomes lower as more particles are added until the point where the salt stops dissolving.
Answer Impurities tend to increase the boiling point and lower the freezing point. in a way boiling point of salty water > boiling point of fresh water freezing properties of salty water < freezing properties of fresh water melting properties of salty water < melting properties of fresh water .Salt water, contains NaCl, which ionizes into Na and Cl ions. when ions are added to a solvent, such as water, they tend to increase the…