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Questions and Answers
What is the relationship between particle size of precipitates and relative supersaturation?
What is the relationship between particle size of precipitates and relative supersaturation?
- Particle size is directly proportional to relative supersaturation
- Particle size remains constant regardless of relative supersaturation
- Particle size is not affected by relative supersaturation
- Particle size is inversely proportional to relative supersaturation (correct)
How can large crystals be obtained through precipitation?
How can large crystals be obtained through precipitation?
- Increase the rate of nucleation
- Use a higher degree of supersaturation
- Maximize contamination
- Minimize the degree of supersaturation (correct)
What is the formula for relative supersaturation?
What is the formula for relative supersaturation?
- (Q + S)/S (Q = Concentration of mixed reagents before precipitation, S = solubility of the precipitate at equilibrium)
- (S + Q)/S (Q = Concentration of mixed reagents before precipitation, S = solubility of the precipitate at equilibrium)
- (S − Q)/S (Q = Concentration of mixed reagents before precipitation, S = solubility of the precipitate at equilibrium)
- (Q − S)/S (Q = Concentration of mixed reagents before precipitation, S = solubility of the precipitate at equilibrium) (correct)
What should be done to obtain large crystals when precipitating from a dilute solution?
What should be done to obtain large crystals when precipitating from a dilute solution?
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How does high relative supersaturation affect crystal formation?
How does high relative supersaturation affect crystal formation?
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