In the experiment shown below, you add some salt to water.
A = All of the solid dissolves (no solid at the bottom).
B = You add more water and the solid stays dissolved.
Select all of the following that are true about solutions A and B.
The same number of ions are dissolved in A and B.
The concentration of dissolved ions is the same in A and B.
Adding a small amount of water to B would decrease the concentration of ions.
The Ksp of the dissolved salt could be used to calculate the ion concentration in A.
The Ksp of the dissolved salt could be used to calculate the ion concentration in B.
If the concentration of ions in A were known, the concentration of ions in B could be calculated without knowing the volume of liquid in each solution.
I don't believe you have posted all of the details.
To answer these questions, we need to understand some basics about solutions and solubility.
1. The same number of ions are dissolved in A and B.
True. When the salt dissolves in water, it dissociates into ions. Soluble salts typically dissociate completely into their constituent ions. Therefore, the number of dissolved ions would be the same in both A and B if the same amount of salt was added.
2. The concentration of dissolved ions is the same in A and B.
True. The concentration of dissolved ions is determined by the amount of salt dissolved in the water. If the same amount of salt is added to both A and B, the concentration of ions would be the same.
3. Adding a small amount of water to B would decrease the concentration of ions.
False. Adding water to B would not affect the concentration of ions. The amount of water added does not change the amount of salt dissolved in the solution or the number of ions present. Therefore, the concentration would remain the same.
4. The Ksp of the dissolved salt could be used to calculate the ion concentration in A.
True. The Ksp (solubility product constant) is a measure of the solubility of a salt and indicates the maximum amount of the salt that can dissolve in water. By knowing the concentration of the dissolved salt and the Ksp value, you can calculate the ion concentration in solution A.
5. The Ksp of the dissolved salt could be used to calculate the ion concentration in B.
True. Similar to solution A, the Ksp of the dissolved salt can be used to calculate the ion concentration in solution B. As long as the solubility of the salt does not change, the Ksp value can be applied to determine the ion concentration.
6. If the concentration of ions in A were known, the concentration of ions in B could be calculated without knowing the volume of liquid in each solution.
True. If the concentration of ions in solution A is known, and the same amount of salt is added to B, the concentration of ions in B would be the same. This is because the amount of salt dissolved and the resulting ion concentration is independent of the volume of the solution, assuming no other factors change (such as temperature or solubility).