A sample of potassium nitrate with a mass of 49.0 g is dissolved in 100 g of water at 100°C, with precautions taken to avoid evaporation of any water. The solution is cooled to 30.0°C and a small amount of precipitate is observed. What type of solution is described?
a. hydrated
b. saturated
c. unsaturated
d. supersaturated
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Answer:
I think it must be
c) Unsaturated
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