I need to figure out whether NaNO3 is saturated, unsaturated, or supersaturated in a 3 molal solution at 40 degrees Celsius. I am completely stuck right now, and am not sure where to go with this.
Do you have a table or a graph in your text/notes that gives the solubility of NaNO3 at 40 C?
DrBob222,
No. We have used the Solubility Curve before, but it doesn't show NaNO3 at 40 C. All I have is the 3m, 40 C, and you can figure out the molar mass (85). Any idea how to go about this?
See this link. I would read that as 105 g NaNO3/100 g H2O
http://staff.concord.org/~ddamelin/chemsite/h_solutions/handouts/SolubilityCurves.pdf
So mols NaNO3 = 105 g/85 = about 1.2 and
1.2 mol/0.1 kg solvent = about 12 m. So 3 m should be .......?
To determine whether NaNO3 is saturated, unsaturated, or supersaturated in a 3 molal solution at 40 degrees Celsius, we need to compare the concentration of NaNO3 in the solution with its solubility at that temperature.
The solubility of a compound is the maximum amount of that compound that can dissolve in a given amount of solvent at a specific temperature. When the concentration of a solute is equal to its solubility, the solution is said to be saturated. If the concentration is less than its solubility, the solution is unsaturated, and if the concentration exceeds its solubility, the solution is supersaturated.
To find the solubility of NaNO3 at 40 degrees Celsius, we can consult a solubility table for the compound. Here is a simplified step-by-step guide to finding this information:
Step 1: Search for a solubility table or chart specific to NaNO3. These tables provide information about the solubility of various compounds at different temperatures.
Step 2: Locate the temperature of 40 degrees Celsius in the table.
Step 3: Look for the corresponding solubility value for NaNO3 at 40 degrees Celsius. The unit of solubility is usually grams of solute that can dissolve in 100 grams of solvent (commonly water).
Step 4: Once you have the solubility value, you can compare it with the concentration of the solution to determine saturation.
If the concentration of NaNO3 in the 3 molal solution is less than the solubility at 40 degrees Celsius, the solution is unsaturated. If the concentration is equal to the solubility, the solution is saturated. And if the concentration is greater than the solubility, the solution is supersaturated.
Remember, the solubility of NaNO3 may vary slightly depending on the source or the specific experiment conditions, so it is essential to use a reliable source for the solubility data.