Which of the following factors affects solubility
a) temperature and th nature of the solvent
b) temperature and degree of mixing
c) particle size and degree of mixing
d) particle size and temperautre
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When a little amount of a solute is added to a solvent, there is a chance that the solute gets dissolved in it. When a large amount of it is added, the dissolution process stops at a level and some amount of solid remain undissolved. For most solutes, there is a limit to the quantities that can dissolve in fixed volume of a given solvent, at a particular temperature. That limit is called solubility of that solute in the given solvent at that temperature. Solubility is the maximum concentration that can dissolve at a particular temperature. Solubility of a solute depends upon the nature of solute-solvent interaction (i.e. nature of the solvent), temperature and applied external pressure (in case of solubility of gases).
Smaller particle size of a solute eases the process of dissolution and reduces the time required to attain saturation equilibrium, though it does not affect the position of the solubility equilibrium in any way.
Hence the correct answer is option a) temperature and the nature of the solvent.
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