rate the following solutions as unsaturated, saturated, or supersaturated
a) 2020g/L of KNO3 at 85 degree
b) 185g/L of NaCl at 50 degree
c) 500g/L of KCl at 75 degree
d) 900g/L of NaNO3 at 55 degree
I have no idea since I don't have the solubility tables of all the salts versus temperature memorized. I don't know many who do. Surely you have tables in your text or in your notes that gives you that information.
If the solubility is < in the problem the solution is supersaturated.
If the solubility is the same as in the problem the soln is saturated.
If the solubility is > in the problem the soln is unsaturated.
To determine whether a solution is unsaturated, saturated, or supersaturated, we need to compare the concentration of the solute in the solution to its solubility at a specific temperature. The solubility of a compound refers to the maximum amount of solute that can dissolve in a given amount of solvent at a specific temperature.
a) 2020g/L of KNO3 at 85 degrees: First, we need to check the solubility of KNO3 at 85 degrees. By looking up the solubility chart or using a reliable source, we find that the solubility of KNO3 at 85 degrees is 126 g/L. Since the given concentration (2020 g/L) is much higher than the solubility (126 g/L), the solution is supersaturated.
b) 185g/L of NaCl at 50 degrees: Similarly, we need to find the solubility of NaCl at 50 degrees. Let's assume that the solubility is 360 g/L at this temperature. In this case, the given concentration (185 g/L) is lower than the solubility (360 g/L), so the solution is unsaturated.
c) 500g/L of KCl at 75 degrees: Once again, we check the solubility of KCl at 75 degrees, which let's say is 430 g/L. In this case, the given concentration (500 g/L) is higher than the solubility (430 g/L), indicating that the solution is supersaturated.
d) 900g/L of NaNO3 at 55 degrees: Finally, we find the solubility of NaNO3 at 55 degrees, which is around 246 g/L. Since the given concentration (900 g/L) exceeds the solubility (246 g/L), the solution is supersaturated.
To summarize:
a) Supersaturated
b) Unsaturated
c) Supersaturated
d) Supersaturated