A solution is made at room temperature containing 90 g of NaCl and 200 g of water. It is brought to a temperature of 50°C. What are you most likely to see? (Select all that apply.)
A. a solution with a few crystals at the bottom
B. all the solid dissolve
C. a colorless solution
D. a solution with all 90 g of the crystals lying at the bottom of the container
E. A solution with a bunch of confused penguins trying to swim in it.
To determine what is most likely to happen when the solution is brought to a temperature of 50°C, we need to consider the solubility of NaCl in water at different temperatures.
At room temperature, NaCl is highly soluble in water, so all the solid would dissolve in the water to form a homogeneous solution. However, as the solution is heated to 50°C, the solubility of NaCl in water increases, meaning more NaCl can dissolve in water at this higher temperature.
Based on this information, the most likely observations would be:
B. All the solid dissolves: Since the solubility of NaCl in water increases with temperature, all the NaCl in the solution is expected to dissolve when heated to 50°C.
C. A colorless solution: NaCl dissolved in water does not impart color to the solution, so it would remain colorless even after heating.
Therefore, the correct answers are B. all the solid dissolves and C. a colorless solution.
To determine what is most likely to happen when a solution made at room temperature containing NaCl and water is brought to a temperature of 50°C, we need to consider the solubility of NaCl in water.
The solubility of NaCl in water increases as the temperature increases. Therefore, at a higher temperature of 50°C, we expect more NaCl to dissolve in the water compared to its solubility at room temperature.
Now let's go through each option and determine the likely outcomes:
A. A solution with a few crystals at the bottom: As the solubility of NaCl increases with temperature, it is unlikely that only a few crystals remain undissolved at the bottom of the container. Therefore, this option is less likely.
B. All the solid dissolves: Since the solubility of NaCl increases with temperature, it is likely that all of the solid NaCl will dissolve in the water when the solution is heated to 50°C. Therefore, this option is plausible.
C. A colorless solution: The dissolved NaCl does not add any color to the solution, so it is likely to remain colorless regardless of the temperature change. Therefore, this option is plausible as well.
D. A solution with all 90 g of the crystals lying at the bottom of the container: As previously mentioned, the solubility of NaCl in water increases with temperature. Therefore, it is highly unlikely for all 90 g of NaCl crystals to remain at the bottom of the container. Therefore, this option is not likely.
In conclusion, the most probable outcomes are that all the solid NaCl will dissolve, resulting in a colorless solution. Therefore, options B and C are the most likely to occur.