How does the amount of salt affects the time required for water to freeze?

Answer 1

Adding salt to water raises the freezing (and melting) point of water (to below 0 °C or 32 °F). Salty water will freeze at a lower temperature than pure water, thus making it take longer to freeze than the same amount of pure water.

See the Related Question to the left for more information about how to solve for the exact change in freezing point.

i think that yall are right but i think it takes longer becase the salt gose to the bottem and sits there causing it not to freeze for a while

Answer 2

Yes, saltier water will take more time because adding salt lowers its freezing point. More energy must be removed to freeze the salt water than with pure water. (Specifically because the salt ions block the formation of ice crystals, allowing the number of "melting" molecules to exceed the number of "freezing" molecules.)

Answer 3

Adding salt to water lowers its freezing point, so saltwater needs to be colder than freshwater in order to freeze. This means that saltwater will generally take longer to freeze than freshwater. The amount of salt will determine how much the freezing point is lowered.

Answer 4

it does affect the time for water to freeze because the chemicals in the salt affect the water that is in the salt.

Answer 5

If every bit of salt is place under water at the same time, it shouldn't affect the process.

Answer 6

to much salt will affect the time for the salt water to freeze because to much salt would make it not even freeze fast like regular water.

Answer 7

Yes it does.