All Questions
44
questions
2
votes
2
answers
145
views
In an unsaturated solution, is the product of ions still equal to Ksp?
Suppose I have a solution of a sparingly soluble compound, and consider its solubility in g/L. If I have less g/L of solution than that amount, it means the solution is unsaturated, but what happens ...
- 67
1
vote
0
answers
75
views
What does it mean for a substance to be "sparingly soluble"?
I have trouble understanding what solubility means. Merriam-Webster defines it as follows:
1 the quality or state of being soluble
2 the amount of a substance that will dissolve in a given amount of ...
- 67
2
votes
1
answer
86
views
Are all salts completely dissociated in solution when put in smaller amounts than their molar solubility?
From what I understand, the solubility is given in terms of molar solubility (or $\pu{K_{sp}}$), from which it can be easily calculated). Indeed, the saturation point represents the maximum amount of ...
- 67
9
votes
3
answers
3k
views
Why is there a decrease in the total volume when NaOH dissolves in water?
When a solute is added to a solvent, the volume of the solution should be equal to the sum of the individual volume of the solute and solvent (i.e total volume), right? But why is there a decrease in ...
- 299
0
votes
0
answers
51
views
How to measure pottery glaze leaching?
I am looking for a way to know if glazes from pottery leach chemical compound in water.
Those are usually metal ions: cobalt, manganese, chrome, etc.
The procedure would be to place hot water in the ...
- 1
1
vote
1
answer
208
views
What is the effect of adding another solute to the solubility of the initial solute?
Let's say we have a saturated salt solution with 35 g/100 mL NaCl in water. If we add another solute up to its saturation concentration, for example 182 g/100 ml sucrose (C12H22O11), what happens?
...
0
votes
0
answers
65
views
Solubility of multiple solutes and limits of solubility during freezing
I'm interested in modeling the freezing of solutions of water and I'm not really sure what happens in water after the solubility of a given material is reached. I know that as ice crystals form they ...
- 217
0
votes
0
answers
126
views
Why is the Ag+ concentration in a beaker fixed in the reaction between excess AgCl (s) and KI (aq) from the start? [duplicate]
This arises as a sub-question for the following question: Calculate the concentration of I- in a solution obtained by mixing 0.10 M KI with an excess of AgCl(s).
I tried to look at How does addition ...
0
votes
0
answers
109
views
Comparative Solubility of Double Salts
Is there a tendency that could be used to generally forecast how a double salt might dissolve in aqueous medium compared to the simple salts of its constituents?
Example:
There is metal A, metal B and ...
- 1,097
0
votes
1
answer
213
views
Effect of mixing acids on solubility
Please help me clarify the title if you come up with a better way to put it (you certainly will).
My question is the following:
If you make a mix of equal parts of various acids (Bicarbonate, ...
- 1,097
1
vote
1
answer
2k
views
Using solubility product to determine the mass of the precipitate of a reaction
I mix together $\pu{100 mL}$ of an aqueous $\ce{NaCl}$ solution at $\pu{0.5 M}$ and $\pu{100 mL}$ of an aqueous $\ce{AgNO3}$ solution at $\pu{0.3 M}$. Assuming that the solubility of $\ce{NaCl}$ in ...
- 11
-1
votes
1
answer
108
views
What formula allows adjusting balance of (Ethyl Alcohol / Water / Caffeine powder) to know concentration for the Caffeine solution?
I am experimenting with different levels of concentrated caffeine solution. The solution has a small percentage of ethyl alcohol, in the $\ce{H2O}$.
Problems encountered too much ethyl alcohol ...
- 45
0
votes
1
answer
183
views
Solubility: Is the common ion effect proportional to individual solubility values?
I'm trying to grasp how solubility works in real applications. Is it so that in a solution with only one salt, it's solubility will change upon the addition of another salt with a common ion in a ...
- 451
2
votes
1
answer
958
views
How to find the concentration of barium ions in a mixture of barium sulfate and barium thiosulfate?
I have a hard time with selective precipitation problem.
A mixture of $\ce{BaSO4}$ and $\ce{BaS2O3}$ is shaken with pure water until a saturated solution is formed. Both solids remain in excess. ...
- 23
2
votes
1
answer
73
views
How to take a sample of a hot salt solution without it precipitating in the cooler glassware due to the difference in solubilities at different temps?
I'm doing an investigation to see the effect of temperature on the solubility product of strontium hydroxide.
I made a supersaturated solution left in the oven overnight at 85°C for equilibrium to be ...
- 29