Why salt must be added to the ice bath?

write a brief explanation of why salt must be added to the ice bath for the determination of the freezing point of your solution of p-dichlorobenzene in cyclohexane.Why salt must be added to the ice bath?
Properties of solutions depend on the concentration of solute particles. The freezing points of water solutions are always lower than pure water. This change in freezing point can be calculated using T = (Kf)(m)(i), where Kf is the molal freezing point depression constant (1.86掳C/m for water), m is the molality of the solution, and i is the number of particles produced per formula unit.Why salt must be added to the ice bath?
When salt is put onto ice, the sodium atoms and chlorine atoms break apart. Chlorine is more electronegative thus it will obtain a negative charge and the sodium will have a positive charge. These atoms with an overall charge associate with ice, decreasing the number of hydrogen bonds. A decrease in hydrogen bonds means that it will turn into water. As the salt disassociates into the water bath , the hydrogen bonds will reform, thus producing ice again. In effect the salt lowers the freezing point, and as it disassociates, the freezing point will rise.
did you take that question right off your homework???


do it yourself
To keep the ice from melting. y else