English Deutsch Français Italiano Español Português 繁體中文 Bahasa Indonesia Tiếng Việt ภาษาไทย
All categories

5 answers

I think you are misusing the word “heat”.
“Heat” is a form of energy (or a process in which the temperature of something changes through the addition of heat energy). I believe the property you are referring to is temperature.

Yes, dissolving a salt in water can change in the temperature of the solution….it is possible for the temperature to either rise or fall depending on the type of salt.

For example…

Sodium Hydroxide (NaOH) is a salt that will drastically increase the temperature of the solution when it is dissolved in water. This increase in temperature is due to the highly exothermic nature (gives off heat energy) of the dissolving process for NaOH.

On the other hand, Potassium Chloride (KCl) is another type of salt that will lower the temperature of the solution when it is dissolved. Dissolving KCl in water is endothermic (required energy input), so in order for the process to proceed, it sucks heat energy out of the surroundings and the water’s temperature drops.
Sodium Chloride (NaCl), AKA “table salt”, also has an endothermic enthalpy of solution and thus lowers the temperature of the water when you dissolved it.

You can easily confirm this by trying to dissolve large quantities of ‘table’ salt in a cup of water at home. The temperature will noticeably drop in the water as the NaCl dissolved.

2007-02-10 03:57:08 · answer #1 · answered by mrjeffy321 7 · 0 0

Not if the quantity of added salt is low. But, if you add a whole lot of salt, the temerature changes and moves a bit towards the temerature of the salt.

But, addition of solt changes some properties of water, especially, its boiling and freezing temperatures. This is exploited when making ice-cream. Salt water is frozen because it can maintain lower temperatures; and ice-cream is cooled over it.

2007-02-10 03:51:31 · answer #2 · answered by loki_knows 4 · 0 0

yes of course, there is a heat change that happens and it is known as [the heat of dissolution]
HEAT OF DISSOLUTION; it is the quantity of heat liberated from dissolving one mole of matter in in a solvent.
and this heat can not be measured but it can be calculated
you can bring acup , put in it water , measure temperature of water , put salt , stir well but not hardly , measure temperature , then after you write the temperature of the first state and second you will find that there is change

2007-02-10 03:53:04 · answer #3 · answered by yara 1 · 0 0

If u will be cooking it a long time like beans don't put it in until the last because u will concentrate the salt ,and your beans Will be too salty.

2007-02-10 06:49:37 · answer #4 · answered by JOHNNIE B 7 · 0 0

Pepper does not generate heat it gives a sensation of heat in the mouth or on mucous membrane of humans and some, but not all, animals.

2016-05-25 01:11:52 · answer #5 · answered by ? 4 · 0 0

fedest.com, questions and answers