Multiple Choice
When aqueous solutions of AgNO_3 and NaCl are mixed, a precipitate forms. Which compound is the precipitate?
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6. Chemical Quantities & Aqueous Reactions
Solubility Rules
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Which of the following actions will cause a solute to dissolve more quickly in a solvent?
A
Making the solution saturated
B
Shaking the solution
C
Cooling the solution
D
Letting the solution settle
Verified step by step guidance1
Understand that the rate at which a solute dissolves in a solvent depends on factors that increase the interaction between solute and solvent particles.
Recognize that shaking the solution increases the contact between solute and solvent by agitating the mixture, which helps distribute solute particles throughout the solvent more quickly.
Note that making the solution saturated means the solvent already contains the maximum amount of solute it can hold at that temperature, so no more solute will dissolve, and the rate effectively drops to zero.
Understand that cooling the solution generally decreases the solubility of many solids in liquids, which can slow down the dissolving process rather than speed it up.
Realize that letting the solution settle reduces movement and mixing, so the solute dissolves more slowly compared to shaking or stirring.
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