Multiple Choice
Which of the following methods would increase the solubility of a gas in water?
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6. Chemical Quantities & Aqueous Reactions
Solubility Rules
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Which of the following actions would increase the rate of dissolution of a solid in a solution?
A
Stirring the solution
B
Decreasing the temperature of the solution
C
Using larger solid particles
D
Adding more solvent without stirring
Verified step by step guidance1
Understand that the rate of dissolution depends on factors such as surface area, temperature, agitation (stirring), and concentration gradients.
Recognize that stirring the solution increases the interaction between the solvent and the solid by moving dissolved particles away from the solid's surface, which maintains a concentration gradient that favors dissolution.
Know that decreasing the temperature generally slows down molecular motion, which reduces the rate of dissolution for most solids.
Recall that using larger solid particles decreases the surface area available for the solvent to interact with, thus slowing the dissolution rate.
Understand that adding more solvent without stirring does not significantly increase the rate of dissolution because the solution near the solid surface can become saturated, limiting further dissolution without agitation.
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