0
What causes entropy to change when a solute dissolves in a solvent?
Wiki User
∙ 8y ago
Verified answer
The solute becomes less ordered. (apex)
Anonymous
AJ
Dahlia Miller
The solute becomes less ordered
Wiki User
∙ 12y agoI think the changes are heat of combustion, heat of solution, heat of formation and heat of reaction.
Wiki User
∙ 8y agoWhy does the entropy of a solid increases when it is dissolved in a solvent
Wiki User
∙ 8y agoThe second law of thermodynamics dictates that entropy always increases in an isolated system when an exchange is made.
Wiki User
∙ 10y agoMolar heat of solution
Which thermodynamic law has to do with entropy?
The second law of thermodynamics, generally stated, is that the entropy of an isolated system always increases in any natural process where change occurs. In a system at equilibrium, of course, the entropy remains constant.
According to the second law of thermodynamics does entropy increase in a cold system?
That depends on what you mean by "cold" system. Entropy in any system can do one of three things: increase, decrease, or remain constant. If the system is closed, then entropy will only ever increase. If the system is open, entropy within it can do any of the three, provided there is a corresponding change in entropy outside the system (energy must come from or go to somewhere to effect an entropy change). The absolute amount of energy in the system makes no difference to the entropy of it. It is whether you have an open or closed system that counts.
How does the structure and entropy change when water freezes?
it doesn't #gratata #swag
When firecrackers explode will there be any change in entropy?
Yes. By virtue of the fact that the formally well-organized firecrackers have become an exploded mess, entropy will have increased.
Does a change in entropy occur in purely mechanical motion?
Yes, changed in entropy refer to changed in mechanical motion. Entropy is a measure of the number of specific ways in which a thermodynamic system may be arranged, commonly understood as a measure of disorder.
What causes the entropy to change when the solute dissolves in a solvent?
The solute becomes less ordered
When sugar dissolves es in water is the change in entropy positive or negative?
increase
In thermo-dynamics such a change causes an increase in entropy?
irriversible
Energy transfer that causes a change in temperatureWhat term refers to an energy transfer that causes a change in temperature?
Entropy
Is iodine dissolves in alcohol a chemical or physical change?
Dissolving (as such) of solutes in a solvent is physical.
How does an increase in surface area help a solute dissolve more quickly?
Not necessarily just changing the surface area causes the rate to change. Changing the ratio of surface area volume changes the rate at which a solute dissolves in a solvent. If the surface area is larger and the volume of a solute is smaller or the same, then the rate at which the solute dissolves in a solvent increases. If the surface area is smaller and the volume of the solute is larger or the same, then the rate at which the solute dissolves in a solvent decreases.
Why NaCl is very soluble but not CaO is only slightly soluble in water?
Its all to do with enthlapy and entropy. Anything which is soluble usually has a negative standard enthlapy of solution - the energy involved when 1 mole of solute dissolves in a solvent to give an infinately dilute solution. However, NaCl has a slightly positive enthalpy of solution, yet it dissolves. The reason for this is entropy - the change in the amount of disorder. When NaCl dissolves in solution, there is more chaos, more molecules within the solution. Any process that has a large positive entropy change will be favourable - spontaneous and can occur (reaction will 'go'). However, with CaO, the Ca2+ formed in solution has a high affinity (attraction to) for water molecules, hence a lot of water molecules are arranged orderly - less chaos and hence a negative entropy. This should in effect make the compound insoluble, however, the slight solubility is due to it still having a negative enthalpy change of solution - hence despite entropy it is still slightly soluble. (You may be asking how is dissolving CaO possible if entropy is negative? The entropy of the system maybe negative, but the entropy of the surroundings is positive (dissolving gives out heat - exothermic), hence the overall entropy (sum of both entropies) is positive and the reaction will 'go'.
Why does Milo dissolve in hot milk?
it is a physical change not a chemical change. milo dissolves into hot milk because it is a super saturated solvent.
Entropy change for dissolving salt in water?
This question isn't very complete, but if you meant what is the solute or solvent, the water would be the solvent because there is more water than salt. In this case, the salt is the solute. If there...
If something dissolves into something else will it change mass?
The mass of the solution will be equal to the mass of the solute plus the mass of the solvent. However, the total mass does not change.
What is true about entropy?
Entropy is not change. Entropy is disorder.
Function of entropy in climate change?
The climate is not affected by entropy.
