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It depends. Some materials dissolve to give off heat (dissolution is exothermic), while some dissolve and require heat (dissolution is endothermic). If the solution is lower in energy than the materials prior to dissolution, then heat is given off. If the solution is higher in energy then it requires heat to dissolve or gets colder. "Dissolution" can occur between different phases (solid/solid, solid/liquid, liquid/liquid, etc.).
Wiki User
∙ 12y ago
Wiki User
∙ 13y agowith an increase in heat energy, more kinetic energy is created. This means that the particles in a solution are moving at a faster rate than before, allowing more collisions with each other and the solute. Therefore, with an increase in collisions, dissolution would occur faster.
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What processes are endothermic?
During an endothermic process heat is absorbed.
What happens to energy when a solution forms?
When ions are formed energy of the ionised compound's energy increases. But it nay vary with conditions.
What is thermochemical analysis?
This is the study of heat released/absorbed during chemical reactions.
How do you make rock salt to make the snow melt?
During the dissolution in water sodium chloride release the heat of solution.
How do you distinguish exothermic and endothermic processes?
By whether heat is released or absorbed during the reaction.
Why heat evolve at dilution of caustic?
Caustic dissolution involves the dissolution of NaOH in water. The heat evolves during this process because it is being absorbed.
What happens to heat during an endothermic reaction?
Heat is absorbed.
What is true regarding the dissolution of a salt ionic solid in water?
Heat is absored or released during salt dissolution deping on the salt A+ LEaring;]
What processes are endothermic?
During an endothermic process heat is absorbed.
What happens to energy when a solution forms?
When ions are formed energy of the ionised compound's energy increases. But it nay vary with conditions.
What is thermochemical analysis?
This is the study of heat released/absorbed during chemical reactions.
What is an insulated device used for measuring the amount of heat absorbed or released during a reaction?
An insulated device used for measuring the amount of heat absorbed or released during a reaction is called a calorimeter.
Does dissolution or crystalization produces heat?
Crystallization produces heat.
Is heat absorbed or released during evaporation?
Heat is absorbed by the molecules leaving the place the evaporation is occuring. That is why, after putting aftershave or cologne, you feel cold. The alcohol in the aftershave/cologne has evaporated and taken the heat from your face with it.
Is sweating is a prof of heat absorbed or heat release?
heat release
How do you make rock salt to make the snow melt?
During the dissolution in water sodium chloride release the heat of solution.
How do you distinguish exothermic and endothermic processes?
By whether heat is released or absorbed during the reaction.
