what happens to the freezing point of water when salt is added to it?

Question

i'm doing my science homework and i need to know if adding salt to water will increase or decrease the freezing point of water. IN other terms will it take longer or shorter to freeze when salt is added. The salt is regular table salt.

Answer 1

Regular water freezes and the salty water does not. When you add an impurity to a substance, you tend to raise its boiling point, and lower its freezing point. Salt is an impurity to the water, and it prevents it from doing a phase change from liquid to solid as easily as when it is pure. Pure water freezes at 32 F or 0 C. Salt water freezes at a lower temperature though, about three or four degrees lower. The reason your salty water never freezes in your freezer is your freezer never gets below this temperature! It is kept at a temperature just below freezing for pure water. Not quite cold enough for your salty water.

Answer 2

Freezing Point Of Salt

Answer 3

As many others have reported, it does count number upon what's being extra to the water. i'd opt to declare that in a astounding type of situations you want to anticipate the impurities to spice up the boiling component of water, as takes position at the same time as salt is extra. the actual question is even if the count number extra has an greater or shrink boiling component than organic and organic water. If by creating use of "impurities," you're talking about elements that ought to by probability be blended with water, because the minerals and salts that obviously look in water contained interior the wild, then they particularly plenty continually effect in an greater boiling temperature. i imagine also that many chemical elements that ought to probable shrink the boiling component of water, may opt to truly have a bent to split out or evaporate by the years. so that you'll opt to no longer anticipate to discover many examples of low boiling component "water" obviously happening.

Answer 4

The freezing point will fall. That's why salt melts ice on sidewalks.

Answer 5

Get off the computer and do your homework for real. Go to the freezer and put equal amounts of water in matching containers. Place them in the freezer. check at regular intervals.