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Any solute lowers the freezing point; there's nothing special about NaCl. One way to think about this is that the solute molecules "get in the way" of the freezing process: they don't fit into the regular crystalline lattice of the solid, which makes it harder to go from a liquid to a solid, which means the freezing point goes down.
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Which would lower the freezing point more 100 moles of sugar or 100 moles of NaCl?
100 moles of NaCl would lower the freezing point more than 100 moles of sugar. This is because NaCl dissociates into more particles in solution compared to sugar, resulting in a greater depression of the freezing point due to colligative properties.
Can you lower freezing point of pure water?
The solution that will lower the freezing point of water the most is going to be the solution with the highest concentration of particles. This will likely depend on whether the salt dissociates into 2, 3, etc... particles.
Which has a lower freezing temperature 0.10 m NaCl or 0.10m glucose?
0.10m NaCl has a lower freezing temperature compared to 0.10m glucose. This is because NaCl dissociates into more particles in solution, causing greater osmotic pressure that lowers the freezing point more than glucose, which does not dissociate.
Why does NaCl lower the freezing point of water by twice as much as sucrose?
NaCl dissociates into two ions in water, increasing the number of solute particles and lowering the freezing point more than sucrose, which does not dissociate into ions. This difference in dissociation behavior leads to NaCl causing a greater decrease in freezing point compared to sucrose.
How much would the freezing point of water decrease if 4 mol of NaCl were addes to 1 kg of water?
14.88 degrees Celsius.
Will NaCl's affect the freezing point of a solution make the freezing point increase?
No, adding NaCl to a solution will actually lower the freezing point of the solution. This is because the presence of dissolved ions from the salt disrupts the formation of ice crystals, causing the freezing point to decrease.
Which solutes will lower the freezing point of water the most?
Electrolytes like salt (NaCl) will lower the freezing point of water the most because they dissociate into ions when dissolved in water, increasing the number of particles in the solution. This disrupts the formation of ice crystals, lowering the freezing point.
How does the presence of dissolved sodium chloride affect the boiling and freezing point of water?
Dissolved solute (NaCl, salt) will raise the boiling point and lower the freezing point of water. This is known as a colligative property.
How would the freezing point of water decrease if 4 mol of NaCl were added to 1kg of water?
The freezing point of water would decrease if 4 mol of NaCl were added because NaCl is a solute that disrupts the water molecules' ability to form solid ice. Each mole of NaCl added to water reduces the freezing point by approximately 1.86 degrees Celsius. So, with 4 mol of NaCl added, the freezing point of water would decrease by about 7.44 degrees Celsius.
Which would lower the freezing point more 100 moles of sugar or 100 moles of NaCl?
100 moles of NaCl would lower the freezing point more than 100 moles of sugar. This is because NaCl dissociates into more particles in solution compared to sugar, resulting in a greater depression of the freezing point due to colligative properties.
Can you lower freezing point of pure water?
The solution that will lower the freezing point of water the most is going to be the solution with the highest concentration of particles. This will likely depend on whether the salt dissociates into 2, 3, etc... particles.
What happens when freezing H2O and NaCl?
The freezing point of the solution depends on the NaCl concentration.
Can regular salt melt ice?
Yes, salt can help melt ice by lowering the freezing point of water. When salt is applied to ice, it causes the ice to begin melting since the saltwater mixture has a lower freezing point than plain water.
How does NaCl melt ice?
Yes, because the heat of dissolution in water of NaCl is released and the freezing point of water lowered.
Which has a lower freezing temperature 0.10 m NaCl or 0.10m glucose?
0.10m NaCl has a lower freezing temperature compared to 0.10m glucose. This is because NaCl dissociates into more particles in solution, causing greater osmotic pressure that lowers the freezing point more than glucose, which does not dissociate.
Why does an NaCl solution freeze at lower temperature than water but boils at higher temperature than water?
NaCl solution freezes at lower temp. than water but boils at higher temp.than water
What would the final freezing point of water be if 3mol of NaCl were added to 1kg of water?
The freezing point depression constant for water is 1.86°C kg/mol. First, calculate the molality of the solution: 3 mol NaCl / 1 kg H2O = 3 mol/kg. Next, calculate the freezing point depression: ΔTf = iKfm where i is the van't Hoff factor (2 for NaCl), Kf is the freezing point depression constant, and m is the molality. Plugging in the values, the final freezing point would be -11.16°C.
