The CHANGE in freezing point can be determined from ∆T = imK where ∆T is the change in freezing point, i is van't Hoff factor (1 for sugar, a non electrolyte), m is molality (moles solute/kg solvent), and K is the freezing point constant for water (1.86). Thus ∆T = (1)(3)(1.86) = 5.58ºC. So, the FINAL freezing point will be -5.58ºC
The freezing point depression can be calculated using the formula ΔTf = Kf * m, where Kf is the freezing point depression constant (1.86 °C/kg) and m is the molality of the solution. With 3 mol of sugar dissolved in 1 kg of water, the molality is 3 mol / 1 kg = 3 mol/kg. Thus, the freezing point depression would be ΔTf = 1.86 °C/kg * 3 mol/kg = 5.58 °C. The final freezing point of the solution would be the freezing point of water (0°C) minus the freezing point depression, so the final freezing point would be -5.58°C.
The freezing point of water decreases by about 1.86 degrees Celsius for each mole of solute (such as sugar) dissolved in 1 kg of water. So, the freezing point would decrease by 1.86 degrees Celsius for every mole of sugar added.
The freezing point depression formula is ΔT = i * Kf * m, where i is the van't Hoff factor, Kf is the cryoscopic constant (1.86°C kg/mol for water), and m is the molality of the solution. The van't Hoff factor for sugar is 1, so the molality of the solution is 3 mol / 1 kg = 3 mol/kg. Therefore, ΔT = 1 * 1.86 * 3 = 5.58°C. The final freezing point of water would be 0°C - 5.58°C = -5.58°C.
Adding sawdust to ice cubes will lower the melting point, slowing down the melting process. However, adding sugar or salt will cause the ice cubes to melt faster by lowering the freezing point of water through a process called freezing point depression.
The freezing point of sugared water is lower than that of pure water. The freezing point depression is dependent on the concentration of sugar in the water. Generally, a solution of 10% sugar will freeze at a lower temperature than pure water.
-5.58 C
-5.58 C
The freezing point depression can be calculated using the formula ΔTf = Kf * m, where Kf is the freezing point depression constant (1.86 °C/kg) and m is the molality of the solution. With 3 mol of sugar dissolved in 1 kg of water, the molality is 3 mol / 1 kg = 3 mol/kg. Thus, the freezing point depression would be ΔTf = 1.86 °C/kg * 3 mol/kg = 5.58 °C. The final freezing point of the solution would be the freezing point of water (0°C) minus the freezing point depression, so the final freezing point would be -5.58°C.
The freezing point of water decreases by about 1.86 degrees Celsius for each mole of solute (such as sugar) dissolved in 1 kg of water. So, the freezing point would decrease by 1.86 degrees Celsius for every mole of sugar added.
The normal freezing temperature for pure water is 0c. Howeverif sugar is added in the pure water, the freezing point will be lower than zero. How far below zero will depend on the sugar concentration in the water.
The normal freezing temperature for pure water is 0c. Howeverif sugar is added in the pure water, the freezing point will be lower than zero. How far below zero will depend on the sugar concentration in the water.
-5.58 C
Salt and sugar can both help ice melt faster by lowering the freezing point of water. Vinegar, on the other hand, can lower the freezing point even more than salt or sugar, potentially making ice freeze longer when added to water.
Yes, sugar can lower the freezing point of water. When sugar is dissolved in water, it disrupts the water molecules' ability to form a crystal structure, which results in the freezing point of the solution being lower than that of pure water.
7.44 degrees c.
The freezing point depression formula is ΔT = i * Kf * m, where i is the van't Hoff factor, Kf is the cryoscopic constant (1.86°C kg/mol for water), and m is the molality of the solution. The van't Hoff factor for sugar is 1, so the molality of the solution is 3 mol / 1 kg = 3 mol/kg. Therefore, ΔT = 1 * 1.86 * 3 = 5.58°C. The final freezing point of water would be 0°C - 5.58°C = -5.58°C.
Adding 4 mol sugar to 1 g (gram) water is impossible !