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Because whoever told you this is an idiot or lives in an alternative universe.
NaCl is a solid at room temperature. Ethanol is a liquid at room temperature. NaCl, as an ionic compound, has a higherfreezing point than a covalently bonded compound such as ethanol.
Another possibility is that you didn't understand what was said and left out some words in your question. If you add an equal number of moles of sodium chloride and ethanol to the same amount of water, the sodium chloride solution will have a lower freezing point for several reasons, chief among them that sodium chloride dissociates in water and ethanol doesn't.
What else can I help you with?
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 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.
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.
Which ionic compound will lower the freezing point the most of 1 mol of it is added to 1 mol of it is added to 1 L of water?
The ionic compound that would lower the freezing point the most when 1 mol is added to 1 L of water is one that dissociates into the highest number of ions. Strong electrolytes like sodium chloride (NaCl) or calcium chloride (CaCl2) would be more effective at lowering the freezing point compared to weak electrolytes like sucrose (C12H22O11).
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 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.
What happens when freezing H2O and NaCl?
The freezing point of the solution depends on the NaCl concentration.
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.
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 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 does NaCl lower the freezing point of water?
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.
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 ionic compound will lower the freezing point the most of 1 mol of it is added to 1l of water?
The ionic compound that will lower the freezing point the most when 1 mol is added to 1 liter of water is sodium chloride (NaCl), as it dissociates into two ions (Na⁺ and Cl⁻) in solution. The extent of freezing point depression is proportional to the number of particles in solution, described by the van 't Hoff factor (i). Since NaCl has an i of 2, it effectively contributes more to the colligative properties than a compound that dissociates into fewer ions. Other ionic compounds like magnesium chloride (MgCl₂), which dissociates into three ions (Mg²⁺ and two Cl⁻), would lower the freezing point even more than NaCl, making it a better candidate for maximum freezing point depression.
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.
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.
