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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.
What else can I help you with?
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 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.
Does the temperature of water affect how rapidly salt will dissolve?
the hottter the temperature the faster salt dissolves
Can hot water dissolve more salt then room temperature water?
yes, Because the warmer the water is the closer it is to gas form and so therefore the particles are moving at a faster rate and have more successful collisions with the salt particles making the salt dissolve faster. Colder water is closer to solid form and the particles move at a slower rate and have less successful collisions and therefore don't bump into salt particles as often making the salt dissolve at a slower rate. The warmer the water is the more activation energy there is to encourage the water to begin reacting with the salt and dissolve it.
What are the factors that may affect the rate at which the salt dissolves in water?
Factors that may affect the rate at which salt dissolves in water include temperature (higher temperatures generally increase the rate of dissolution), agitation or stirring of the solution (increases contact between salt and water molecules), surface area of the salt particles (finely ground salt dissolves faster), and the concentration of the salt solution (higher concentrations may slow down the dissolution rate).
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.
Does the amount of salt affect evaporation?
The amount of salt in water affects its evaporation rate. Adding salt decreases the rate of evaporation because it raises the boiling point of the water. This means the water needs more energy to evaporate, thus slowing down the process.
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.
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.
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
How does adding salt to water effect evaporation?
Adding salt to water increases the boiling point of water, which in turn can decrease the rate of evaporation. However, once the water is in the liquid state, the presence of salt does not significantly affect the process of evaporation.
How does stirring affect dissolution of common salt in water?
Stirring helps to increase the rate of dissolution of common salt in water by promoting more frequent collisions between the salt particles and the water molecules. This helps to overcome the barrier to dissolution and allows the salt to dissolve more quickly and evenly in the water.
