All Questions
18
questions
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Who is more polar: acetonitrile or methanol?
According to data dipole moment of acetonitrile is around 4 while that of methanol is 1.7 but is said that acetonitrile is more soluble in non polar solvent that methanol.
But shouldn't methanol be ...
- 21
-2
votes
1
answer
118
views
Small (personal) scale sea salt production?
I was looking to try to make a small setup for producing small amounts of sea salt. Ideally a series of evaporation chambers, with a heavy brine as the finished product, that could then be baked. May ...
9
votes
1
answer
699
views
Why is the water solubility of CO worse than that of CO2?
I tried my best to ask SciFinder, Google, and Google Scholar the wrong questions ...
I found many paper on the fitting of the solubility to some equations to be able to calculate the amount of $\ce{CO}...
1
vote
1
answer
77
views
Seeing solubility in various cases
Match the following:
$\begin{array}{|c|c|c|c|} \hline &\textrm{Column-I}&&\textrm{Column-II} \\\hline \textrm{(A)}&\ce{AgBr}&\mathrm{(p)}&\mathrm{(Solubility~in~water~is~more~...
- 111
0
votes
1
answer
75
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Does PEO particle size decrease when dissolved in water?
I am looking to make metallic ink for inkjet printing and using PEO 1 wt% (MW ~600,000) as a binder. The print head I am hoping to use has a nozzle diameter of 80 microns. The metal powder dispersed ...
- 11
2
votes
1
answer
91
views
Relationship Atmospheric Gases and Ocean Gases [closed]
If this question is better suited for the Earth Science StackExchange or another StackExchange please let me know.
Edit 1: Modified for clarity and brevity.
Something that's unclear to me is the ...
- 247
1
vote
1
answer
170
views
Should I include ions from the solvent in solubility product constant calculations?
I'm trying to determine the Solubility Constant $K_\mathrm{sp}$ of $\ce{Ba(NO3)2}$ dissolved in nitric acid solution $\ce{HNO3}$ from experimental data.
$\ce{HNO3}$ will be mostly dissociated so ...
- 199
3
votes
1
answer
204
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Flaw in my logic on Henry's Law?
It states mathematically $ p=Kx $ where $x$ is mole fraction of dissolved gas and $p$ is partial pressure of the gas.
Dissolution of gases is exothermic, so with increase in temperature, solubility $x$...
- 41
0
votes
1
answer
87
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How to evenly mix NaCl and Lactose
Q:
You have 10 g NaCl (s) and 90 g Lactose (s) (both easily soluble in water.) You want to achieve a 100 g mixture of these two compounds in solid form where they are completely evenly mixed. (A 1 mg ...
- 9
2
votes
0
answers
136
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Chemical theory, formula(s) that predict final *volume* of a solution?
I asked this question a couple years back regarding the volume of a mixture being less than the volume of the original solute and solvent, but this question asks if there is theory and/or formulation ...
- 2,773
3
votes
1
answer
639
views
Does freezing point depression depend on the charge of the solvated ions?
Assuming an ideal solution, which of these 0.10 M solutions would have the least freezing point depression?
$\ce{HCl}$
$\ce{NaBr}$
$\ce{KNO3}$
$\ce{MgSO4}$
They all produce solutions with two ions ...
- 1,610
3
votes
1
answer
783
views
Gas solubility in water and alcohol
I know that a certain gas is soluble in water but not in alcohol. How can I find the solubility of the gas in mixture of water and alcohol? Do I use a simple linear relation? The gas in question is ...
- 31
2
votes
1
answer
1k
views
Solubility of Alum
What is solubility product of $\ce{K2SO4. Al2(SO4)3.24H2O}$?
Can we consider $K_\mathrm{sp}$ of salts $\ce{K2SO4}$ and $\ce{Al2(SO4)3}$ or something else to find solubility?
I know that Sulphate ...
- 135
2
votes
1
answer
4k
views
Why the "Diverse Ion Effect" increases Ksp?
I've read in chemwiki about the diverse ion effect. Assuming I have an aqueous solution of $\ce{NaCl}$ and an associated $K_\mathrm{sp}$. If I add $\ce{KI}$ there is an associated $K_\mathrm{sp}'$ for ...
- 33
2
votes
1
answer
2k
views
Why is lithium bromide used in absorption refrigerators?
Lithium bromide refrigerator
Why is lithium bromide used in absorption refrigerators? It is more expensive than sodium chloride. The wikipedia article on lithium bromide says it is extremely ...
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