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Questions tagged [solubility]

For questions related to the solubility of compounds in various solvents, especially in water. Do not confuse with [solutions] or [aqueous-solution].

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Solubility of Calcium Fluoride in water

$\ce{CaF2}$ is insoluble in water, but $\ce{CaCl2}$, $\ce{CaBr2}$, $\ce{CaI2}$ are soluble. Why is this so?
tahsin rahman's user avatar
3 votes
3 answers
3k views

Solubility of compounds in water

Why is $\ce{NaCl}$ more soluble in water than $\ce{NaOH}$? Well, this is a question from Chemical Equilibrium and the question hints for explanation in terms of Le Chatelier's principle.
Four Seasons's user avatar
3 votes
1 answer
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Influence of solubility on the complexation constants at different pH values

Given some small chemical compounds whose solubility varies with pH, and in the case of compounds that can form complexes, I have seen that the complexation constant varies with pH. I think there ...
Open the way's user avatar
10 votes
1 answer
7k views

How to determine which gas is more soluble

I have a chemistry homework problem that asks whether $Br_2$ or $O_2$ is more soluble in water in room temperature. However, I can't seem to find a way to figure it out, short of looking it up. Is ...
aaazalea's user avatar
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0 answers
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Prediction of solubility (from chemical structure) at different pHs [closed]

I would like to know What is the best method for predicting the water solubility (and in other solvents) of a compound given its molecular structure at different pHs. What I know now is based on the ...
Open the way's user avatar
5 votes
1 answer
102 views

Are pesticides used on fruit easily washed off?

I was hoping there'd be someone who studies pesticides here. Are they water soluble? Do they get absorbed in to the fruit? How well would you have to wash the fruit to fully remove the residue?
papercuts's user avatar
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3 votes
1 answer
247 views

Is it possible to estimate a substance's water solubility from data like the substance's partition coefficient, dissociation constants, etc.?

If it is possible, how would you estimate a compound's water solubility from data like its partition coefficient, $ \log P $, its dissociation constant, $pK_a $, its molar mass, etc.?
Josh Pinto's user avatar
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1 vote
0 answers
818 views

Can magnesium chloride absorb water and ammonia at the same time?

Anhydrous magnesium chloride will absorb ammonia to the tune of ($\ce{Mg(NH3)6Cl2}$). Incidentally, magnesium chloride is usually a hexahydrate ($\ce{MgCl2(H2O)6}$) at STP. My question is, could ...
Cargo's user avatar
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1 answer
780 views

Why is my NaCl solution seemingly saturated, when I followed the recipe for an isotonic solution?

I prepared an isotonic solution of table salt in water following this recipe: 1 leveled coffee spoon of salt in 0,5L of water. 9g/L would be an isotonic solution, a leveled coffee spoon is commonly ...
martin's user avatar
  • 33
3 votes
1 answer
5k views

How to calculate the solubility of CaF2 at different temperatures?

At $\pu{25^\circ C}$ I used the free energy table for $G$ for the reaction and got $K_\mathrm{sp}= 10^{-9.02}$. I now need to find out what the solubility is at $10$, $20$ and $\pu{30^\circ C}$. ...
Erin's user avatar
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5 votes
1 answer
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Understanding dissolution of CO₂ in Selexol and Rectisol

I'm trying to understand pre-combusiton carbon capture processes as described in this presentation. I'm told that solvents such as chilled methanol ($\ce{CH3OH}$) and dimethyl ethers of ...
Paul's user avatar
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8 votes
2 answers
5k views

Methane seems to dissolve more readily in cold water. Why?

When you are diluting air in the system and/or properly evacuating it, you must consider water temperature. Methane is completely dissolved in water at 42 degrees Fahrenheit (5.5 C) but can be ...
readyready15728's user avatar
2 votes
2 answers
194 views

Are words on my T-shirt removable? [closed]

I wonder if the words on my T-shirt are removable? If yes, what kind of (chemical or physical) ways are there? They look like paints on the cloth, as the letter "C" has become blurred in the way ...
Tim's user avatar
  • 163
16 votes
2 answers
4k views

Liquid which neither dissolves in water nor oil

I am looking for a liquid which is not miscible (or very close) with water or vegetable oil. Ideally, I want to have a container which shows three layers (the three liquids) with clear boundary ...
Greg Austic's user avatar
13 votes
1 answer
900 views

Why do biphasic systems of fluorous and organic solvents form?

It's possible to select a perfluorinated hydrocarbon that is immiscible in another organic solvent, forming a distinct phase boundary. Such systems may become miscible at elevated temperature which is ...
Richard Terrett's user avatar
10 votes
1 answer
19k views

Why is calcium fluoride insoluble in water?

Why is calcium fluoride insoluble in water? $\ce{NaCl}$ is soluble, but $\ce{CaF2}$ is not. Why is this?
chemgirl's user avatar
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28 votes
7 answers
21k views

Why is silver chloride less soluble than silver nitrate?

Related: Reaction between silver nitrate and aluminum chloride Experimentally, $\ce{AgCl}$ is insoluble in water, but $\ce{AgNO3}$ is soluble. They're pretty common in a lab (well, $\ce{AgCl}$ is a ...
ManishEarth's user avatar
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12 votes
3 answers
23k views

Reaction between silver nitrate and aluminum chloride

I googled a bit about what $\ce{AgNO3 + AlCl3}$ will yield and found out the following: $\ce{3AgNO3 + AlCl3 -> Al(NO3)3 + 3AgCl}$ Why is that? I know that $\ce{Ag}$ is higher up in the reactivity ...
Mattias's user avatar
  • 239
27 votes
3 answers
27k views

Why does ice cream make soda fizz?

I've noticed that adding a chunk of ice cream to soda makes the soda fizz slightly near the soda-ice cream interface. I thought it was a physical effect due to the temperature, but adding ice has no ...
ManishEarth's user avatar
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4 votes
1 answer
12k views

Can dissolution reactions be endothermic?

Is it possible for a dissolution reaction of the form $$\ce{X(s) ->[solvent] X (solv)}$$ or $$\ce{M_mX_x (s) ->[solvent] m M^x+ (solv) + x X^m- (solv)}$$ to be endothermic, i.e. $\Delta_\...
Juha's user avatar
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7 votes
4 answers
24k views

What is the difference between melting and dissolving?

What is the difference between melting and dissolving? I am looking some general features. The answer should be adaptable to the melting/dissolving of ice cube (water) in a class of pure alcohol (...
Juha's user avatar
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10 votes
3 answers
4k views

Experimental calculation of solubility product constant

In order to calculate the $K_\mathrm{sp}$ of lead(II) iodide, I mixed $\pu{6.0 mL}$ of $\pu{0.01 M}$ $\ce{Pb(NO3)2}$, $\pu{6.0 mL}$ of $\pu{0.02 M}$ $\ce{KI}$, and $\pu{8.0 mL}$ of water, and a ...
Henry's user avatar
  • 219
8 votes
3 answers
6k views

Availabilty of magnesium ions in phosphate buffer

Phosphate buffer is a common buffer in biological applications, it's especially popular for NMR. Magnesium ions are necessary for many biological systems to work, though the amount of magnesium ions ...
Mad Scientist's user avatar

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