Discussion
A solution freezes at a lower temperature then does the pure solvent. This phenomenon is called freezing point depression. The freezing point depression which is dependent upon the number of dissolved particles in the solution. The higher the solute concentration the greater the freezing point depression of the solution
The freezing point of the pure solvent is at constant temperature but the freezing point of the solution slowly decreases. The decrease caused by the increase in solute concentration as the solvent freezes.
In this experiment, the freezing points of aqueous solution of methanol, a non-electrolyte, and sodium chloride , an electrolyte, will be measured and the molality of each solution will be calculated.
In this experiment have result was invert of the theory because we preparation solution was error it cause to temperature error and the freezing points of solution also error.