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The solubility of a substance is 30 g per 100 mL of water at room temperature, 50 g per 100 mL of water at 80 ∘C. A student mixed 40 g of this substance with 100 mL of water at room temperature (stage 1), and then heated the mixture to 80 ∘C (stage 2). The mixture is then slowly cooled down to room temperature without any precipitation (stage 3). Finally, the student added a small crystal to the mixture and saw precipitation took place. This mixture is    supersaturated at stage 2   heterogeneous at stage 1   homogeneous at stage 4   saturated at stage 3

The solubility of a substance is 30 g per 100 mL of water at room temperature, 50 g per 100 mL of water at 80 ∘C. A student mixed 40 g of this substance with 100 mL of water at room temperature (stage 1), and then heated the mixture to 80 ∘C (stage 2). The mixture is then slowly cooled down to room temperature without any precipitation (stage 3). Finally, the student added a small crystal to the mixture and saw precipitation took place. This mixture is    supersaturated at stage 2   heterogeneous at stage 1   homogeneous at stage 4   saturated at stage 3

Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter13: Solutions And Their Behavior
Section: Chapter Questions
Problem 68GQ: The solubility of ammonium formate, NH4CHO2, in 100. g of water is 102 g at 0 C and 546 g at 80 C. A...
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The solubility of a substance is 30 g per 100 mL of water at room temperature, 50 g per 100 mL of water at 80 ∘C. A student mixed 40 g of this substance with 100 mL of water at room temperature (stage 1), and then heated the mixture to 80 ∘C (stage 2). The mixture is then slowly cooled down to room temperature without any precipitation (stage 3). Finally, the student added a small crystal to the mixture and saw precipitation took place. This mixture is
  
supersaturated at stage 2
 
heterogeneous at stage 1
 
homogeneous at stage 4
 
saturated at stage 3
 
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