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Salt influences heating/cooling of water.
When we want to heat a seawater from 20 to 50 degrees in an electrical kettle, we'll spend more time and electricity for doing it, than for usual water.
Proof
To determine the value of heat, that has been added/removed to/from water the following law is used:
dQ=m*C*dT
where
dQ - amount of added/removed energy (heat), kJ
m - mass, kg
C - specific heat capacity, kJ/kg-K (depends on a type of material)
dT - change of temperature, C (or K)
Changing specific heat capacity, one changes ability of a material (in the case - water) to absorb/dissipate heat, in a same range of a temperature change.
Example. There is 1 kg of usual water, its' temperature is changed on 10 deg K.
C of water is 4.18 kJ/kg-k. Amount of heat Q, that water excepts is:
Q=1*4.18*10=41.8, kJ
C of salted water is 4.8 (depends on salinity), so amount of heat, that salted water absorbs is 48 kJ.
That means, that to change temperature of salted and usual water on a same amount of degrees, we need to put more heat in a salted water.
Wiki User
∙ 13y ago
Wiki User
∙ 15y agoIt does not affect the cooling rate of water, but the cooling rate of ice..
It lowers down the melting point of ice.
Salts like Potassium Nitrate as well as Ammonium Nitrate are used to lower the melting point, so, the ice takes ENERGY to transform into water from the surroundings causing the surroundings to become cool.
Wiki User
∙ 10y agopenis
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Does salt affect the melting of ice or not?
Adding Salt to water will lower its melting point by about 5 degrees Centigrade. When it is cold outside, you spread salt over the roads so that even if the water is at -3 degrees, it will won't freeze.
Does salt affect how fast ice melt in a cup of water?
Salt affects how fast ice melts in a cup of water. When you add salt, the melting process will be faster but it will only affect the part of the ice cube that comes into contact with salt.
Does the sun heat fresh water and salt water at the same time?
they do get rated at the same rate
Does tap water or salt water cause metals to rust faster and why?
Most likely salt water. The salt accelerates the rate of corrosion, plus it has the oxygen needed for the metal to rust. Tap water has the oxygen too but with the salt also, it would cause the metal to rust more rapidly.
What are some abiotic factors that affect puffer fish?
The amount of salt and oxygen in the water, light, and water murkiness.
What are the factors that may affect the rate at which the salt dissolves in water?
The factors that may affect the rate at which salt dissolves in water are heat, the amount of water and the amount and type of salt you are using.
How does cold water affect how salt dissolves?
Cold water simply slows down the rate at which salt dissolves.
What methods would you use to dissolve a large crystal of salt known as rock salt in water Explain all the factors that affect the rate at which the salt will dissolve?
Broken the crystal in small parts; dissolution in water is easy.Factors which affect the rate of dissolution: temperature and stirring.
The rate of evaporation decreases when common salt is added to water why?
Solutes affect the physical properties of water.
Does water salt water or sugar water evaporate faster?
They all evaporate at the same rate. The sugar and salt are in solution with the water. The sugar and salt will remain in the container after the water has evaporated. It will not affect the rate at which the water evaporates. I think you are wrong.Based on an experiment, sugar water evaporates the fastest followed by salt water as the more molecular weight the faster it evaporates.Sugar has more molecular weight than salt.
Will cooling a solution of salt crystals and water slow down the dissolving rate?
Yes; the solubility of solids in liquids decrease when the temperature decrease.
Which water freezes the fastest salt or sugar water?
Sugar water will freeze faster. Salt lowers the temperature at which water freezes. That is why they put salt on the roads and on sidewalks in snowy areas. Sugar in water should have little to no affect on the rate of freezing.
How long will it take 75ml of salt in water to freeze?
The rate of cooling, which governs the rate of freezing, is dependent upon several factors, including the temperature of the surroundings, the medium it is in contact with, and the amount of water that the salt is dissolved in. Thus, this question cannot be answered without additional details.
Does water mixed with salt affect the taste?
Water mixed with salt does not affect the taste,bt it also depend on the amount of water mixed with the salt and the quantity of salt mixed with the water
Does saltwater or lemonjuice have any effect on the rate of dehydration of different types of apples?
do salt water have a affect on apple
Will salt affect the breathing rate of a goldfish?
yes, it will
How does salt effect the rate of osmosis?
Salt would slow this rate considerably and the more salt in the water the slower this rate would be.
