Solubility Vs. Dissociation

[greenseeking]

The amount of salt that dissociates into water is always increased by

a. increasing the temperature
b. (decreasing temp)
c. increasing the amount of water
d. (decreasing... water)

Answer is C.

I was confused between A and C. Can Anyone clarify what the difference between dissociation and solubility is? Back of the book says that temperature has to do more with solubility.

Also, how does changing temperature affect the reaction in an unpredictable way depending on if it was exothermic or endothermic? Back of the book says, "Because a solvation reaction an be either exothermic or endothermic, the effect on the system by a change in temperature varies, and is thus unpredictable. In most cases, increase in temp results in increase in the dissociation of salt into solution, with some exceptions.

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[MedPR]

If the dissociation is an exothermic reaction, adding more heat will shift equilibrium to the left (reactants) and hinder dissociation into products.

 

[greenseeking]

If the dissociation is an exothermic reaction, adding more heat will shift equilibrium to the left (reactants) and hinder dissociation into products.

right thank you!

 

[Mornhavon]

.

 

[Singhp03]

le chatelier's principle(correct me if am wrong):

NaCl(s) + H2O-->NaCl(aq)

Increasing H2O would push reaction to the right(always)

 

[mynamehere]

le chatelier's principle(correct me if am wrong):

NaCl(s) + H2O-->NaCl(aq)

Increasing H2O would push reaction to the right(always)

isn't h20 left out of the dissociation equilibrium because it's a "constant" amount? so i feel like this justification is not as clear