Multiple Choice
Which of the following chemical reactions will produce a precipitate?
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6. Chemical Quantities & Aqueous Reactions
Solubility Rules
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How does breaking up a solid into smaller pieces affect its rate of dissolving in a liquid?
A
It lowers the temperature required for the solid to dissolve.
B
It increases the surface area, allowing more contact between the solid and liquid.
C
It decreases the solubility of the solid in the liquid.
D
It changes the chemical composition of the solid, making it dissolve faster.
Verified step by step guidance1
Understand that the rate of dissolving depends on how quickly the solvent molecules can interact with the surface of the solid.
Recognize that breaking a solid into smaller pieces increases its total surface area exposed to the solvent.
More surface area means more solvent particles can collide with the solid simultaneously, speeding up the dissolving process.
Note that this change affects the rate of dissolving, not the solubility or the temperature required for dissolving.
Conclude that increasing surface area by breaking the solid into smaller pieces increases the rate of dissolving by enhancing contact between solid and liquid.
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