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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Why doesn't ethanol dissolve in sodium bicarbonate?

Today I experimented with different solvents and solutes and was a bit surprised by one result. When I added ethanol to dilute sodium bicarbonate and tapped the test tube against my palm to mix it, I ...
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questions about mercury [element] [on hold]

What is the viscosity of mercury? What is the solubility of mercury? What substances can it react with? I have tried everything else but I just can't find a straight answer
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How does acetone help to make a liquid cleaner stronger? [closed]

Acetone, as a solvent, seems to behave somewhat different than other solvents. It seems to solve things other unpolar solvents do not. For example, I have two cleaner sprays from the same brand, and ...
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1answer
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Using a weak acid to prevent the precipitation of Mg(OH)2

I have this exercise in my chemistry book, and I have been staring at it for so long but unfortunately I have no single idea what to do and where to start. I will be so thankful for any help. $0.05$ ...
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Methanol mixed with varsol [closed]

If I have varsol in a tank and methanol is put into the same tank will methanol rise to the top or will it separate? Or will it mix together ?
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Why is only the carbonate anion used to precipitate Barium?

Q: Why is the $\ce{CO3^2-}$ anion used to precipitate Barium from $\ce{BaBr2}$ and not another anion, such as $\ce{PO4^3-}$, or $\ce{SO4^2-}$? I am studying high school Chemistry, and the current ...
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1answer
48 views

Determining solubility of a gas in a molten salt [closed]

If pressure and temperature are known constants, how can I determine the solubility of a known amount of gas in a mixture of molten salts? Assume the mixture of salts is homogeneous and the ...
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1answer
39 views

Testing for manganese in water [closed]

Is there a decent way to test for solvable manganese in water without purchasing a 150USD test kit? I have a fair chemistry set available (I use it to teach my kids chemistry), and would rather pay ...
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1answer
39 views

Partial dissolution of non-polar solutes in polar solvents

I have learnt that in order for dissolution to occur, the solute-solvent intermolecular forces must be strong enough to overcome the solute-solute and solvent-solvent forces. However if this is the ...
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Searching for a solvent with a low carbon dioxide solubility

I would like to use a liquid solvent for some experimentation with a carbon dioxide solubility as low as possible under usual pressure and temperature conditions (say, $\pu{1 atm}$ and $\pu{293 K}$). ...
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Reacting ZnSO4 with KCl

I'm considering the following reaction: $\ce{ZnSO4} + 2 \ce{KCl} \ce{->} \ce{ZnCl2} + \ce{K2SO4}$ The high solubility of $\ce{ZnCl2}$ would favour the $\ce{ZnSO4}$ & $\ce{KCl}$ direction of ...
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What makes ammonium nitrate soluble?

Ammonium nitrate is one of the classic examples of an endothermic dissolution. People will usually explain why it's soluble by stating that the spontaneous dissolution process of ammonium nitrate is ...
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Ce₂(SO₄)₃ solubility in water [duplicate]

I have mostly come across examples of solids whose solubility increases in liquids with an increase in temperature. However, there seem to be exceptions to generalized rule this such as the solubility ...
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How can I explain PEO-b-PLA behaviors in dissolution?

I dissolved PEO 10K - PLLA 14K in toluene at the concentration of $\pu{50 mg/ml}$, $\pu{25 mg/ml}$, and $\pu{5 mg/ml}$ including $\pu{30 min}$ of sonication. When I sonicated them at room temperature,...
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Is Phosphate (PO4 3-) solube in water? [closed]

Josh~ Superphosphate is used instead of just phosphate because superphosphate is a compound whereas phosphate is an ion. This means that phosphate must attach itself with a cation in order to give a ...
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Why doesn't the expermintal molar solubility match the one calculated by the Ksp value?

For $\ce{HgCl2}$ ($M = \pu{271.52 g mol-1}$), the reported $K_\mathrm{sp}$ value is $10^{-15.69}$. This means that the calculated molar solubility of $\ce{HgCl2}$ in water is $(10^{-15.69}/4)^{1/3}\...
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Understanding the solubility of Ca(HCO3)2

According to wikipedia Ca(HCO3)2 has the following solubility values: 16.1 g/100 mL (0 °C) 16.6 g/100 mL (20 °C) 18.4 g/100 mL (100 °C) So I assume Ca(HCO3)2 would precipitate beyond this level. ...
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Are hydroxides soluble in each other?

Let's say I have molten potassium hydroxide and then I add some Calcium hydroxide. I imagine, since there are hydroxide groups floating around, it would be energetically neutral for the calcium ions ...
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1answer
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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 ...
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Why is phloroglucinol (1,3,5-benzenetriol) not very soluble in water?

Wikipedia says that phloroglucinol (1,3,5-benzenetriol) has a solubility of 1 g/100 ml in water. This is in comparison to: phenol (hydroxybenzene) 8.3 g/100 mL catchecol (1,2-dihydroxybenzene) 43 g/...
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Solubility product constant of copper(II) bromide in water

One of the questions from chegg.com mentions $K_\mathrm{sp}(\ce{CuBr2}) = 6.3\cdot 10^{-10}$, but I suspect this value might be incorrect. Could anyone confirm or refute that $K_\mathrm{sp}$ value? ...
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Why is solubility of AgCN is higher in acidic buffer?

Solubility of $\ce{AgCN}$ is maximum in A) Acidic buffer solution B) Basic buffer solution C) Pure water According to me, it should not matter in which solution we are putting the $\ce{AgCN}$...
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How to calculate the aqueous solubility of CO2 vs Pressure

I would like to make Na2CO3 react with HCl in a closed fixed volume vessel, and accordingly I'd like to understand how ensuing pressure will affect the equilibrium of my reaction (and to which extent ...
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How to determine the solubility of a Metal Fluoride in liquid Gallium

How do I determine if a Metal Fluoride is soluble in liquid Gallium and under what conditions the Metal Fluoride will stay in solution in the liquid Gallium? I am involved in a project that is ...
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What lubricant can be used for mechanical parts in a system containing diethyl ether?

I make a thermal actuator that works with the expansion of diethyl ether at its boiling point of around 34 °C. For sealing and lubrication of the polypropylene piston and barrel, I need a lubricant ...
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Finding EMF of a galvanic cell without standard potentials

For the galvanic cell $$\ce{Ag | AgCl(s), KCl (\pu{0.2 M}) || KBr (\pu{0.001 M}), AgBr(s) | Ag}$$ find the EMF generated given $K_\mathrm{sp}(\ce{AgCl}) = \pu{2.8e-10},$ $K_\mathrm{sp}(\ce{...
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How to derive the conductivity titration curve which accounts for salt formation

I derived an equation that gave me the volume of base required to get a certain $\mathrm{pH}$: In a titration between a weak acid $\ce{HA}$ and weak base $\ce{B}$ (adding base into acid solution) the ...
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Reaction of Lead(II) Chloride and Ammonia

While searching how to identify cations in a solution I found that ammonia could be used to distinguish between $\ce{AgCl}$ and $\ce{PbCl2}$ precipitates after $\ce{HCl}$ had been added. Why does ...
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Which metal ions precipitate in NH4OH? [closed]

From Wikipedia-1, and from an answer here on Stack-Exchange, I can list at least the following elements which will dissolve in aqueous $\ce{NH4OH}$: $\ce{Cr(III), Co(III), Ni(II), Cu(I, II), Zn(II), ...
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Club soda manufacturing process and problem in quality

How to increase $\ce{CO2}$ gas in club soda? I am planning to start a PET bottled club soda industry. My process involves chilling the water up to about $\pu{4 °C}$ and filling under pressure up to $\...
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Other than CO2 release, what are the disadvantages of precipitating metal carbonates using NaHCO3 instead of Na2CO3?

Be, Mg, Ba, Zn, Ni, Ca, Cu, Fe, Mn, Cd, Pb, Hg, Al carbonate salts are all insoluble. I (perhaps naïvely) believe that I could precipitate carbonates from those mixing a soluble salts of these (e.g. ...
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The Trend Between Boiling Point and Solubility in Organic Chemistry

Is it true in assuming that a higher boiling/melting point means that an organic compound will be more soluble in water? I'm trying to distinguish between the solubility of aldehydes vs. ketones ...
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Finding the temperature at which the system reaches equilibrium

I’m really stuck on this problem. This involves dissolving Borax: $$\ce{Na2B4O7•10H2O(s)<=>2Na^+(aq) + B4O7^2-(aq) + 10H2O}$$ $$\begin{align}\Delta H&=\pu{109 kJ/mol} \\ \Delta S&= \pu{...
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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 ...
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How to calculate the rate of dissolution?

How can I calculate the rate of dissolution when I am given the initial amount and volume of the solvent and also the time it takes for it to completely dissolve?
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Where can I find the solubility values of As, Al, Sr, Sb, Ti, and Cr Oxalates in aqueous medium?

Wikipedia doesn't have a reference for the compounds... I'm also looking at least one value around 20C, but across -50-100C would be great.
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How do I go about either finding or calculating Aluminum-Oxalate salt solubility values in aqueous medium?

Water would contain other salts which may complicate things a bit. But finding out the Aluminum-Oxalate salts solubility values in pure water would be a good indicator already. It's for temperatures ...
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Which salts can be used to precipitate chloride ions? [closed]

We don’t have AgNO3 in the lab. I have no idea what else can be useful. I am washing a product and I want to make sure the chlorides are washed away.
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Mixing cobalt(III) hydroxide and thallium(III) hydroxide

A simple question on solutions is driving me crazy. At this point, I think the textbook's wrong. Here's the question: A saturated solution of cobalt(III) hydroxide $(K_\mathrm{sp} = \pu{1.6e-44})$ ...
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What is dielectric constant and how does it explain the reason why water is one of the best solvents

When i was reading solublity of ionic compounds,they mentioned that polar compunds are fairly soluble in polar solvents and water is better solvent due its high dielectric constant.Can anybody explain ...
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Non-equilibrium gas cap above saturated liquid-gas solution

If I could somehow instantaneously replace the $\ce{CO2}$ gas cap at the top of a soda bottle with a different gas, say $\ce{N2}$, would the bottle pressure increase as a result of the $\ce{CO2}$ de-...
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Why does the solubility of LiCl increase with temperature if the dissolution is exothermic?

In an answer to another question, the following data on the solubility of $\ce{LiCl}$ at different temperatures is presented. This suggests that dissolving LiCl is endothermic (according to the ...
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Reconciling these different solubility values

In a review article [1] on the solubility of CaCO$_3$(calcite), the solubility is reported to be on the order of 1 gram/litre. Since CaCO$_3$ has a molar mass of about 100, this solubility is ...
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Why does Mg(HCO₃)₂ on heating gives Mg(OH)₂? [duplicate]

Normally, bicarbonates on heating forms carbonates. Why does Mg not give this too? In a reference book I am referring to, it is given that it is due to high solubility product of Mg(OH)₂ compared to ...
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1answer
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Is barium sulfate soluble in dilute mineral acid?

I have read that $\ce{BaSO4}$ is soluble in $\ce{HCl}$ , but I am not sure whether this works for dilute acid as well. The reaction is - $\ce{BaSO4 + 2 HCl ->BaCl2 + H2SO4}$
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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. ...
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Difference of Ascorbic acid dissolved or precipitated in Glycerol?

Difference of Ascorbic acid (AA) dissolved or precipitated in Glycerol? Referring to pat US20110008445A1 Solution 1 At 25C, AA was dissolved in glycerol and alcohol (subsequently removed by ...
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Henry's Law Constant in Freon

I am a physics student trying to calculate some values for a project I am working on, and am confused about Henry's constant. I want to dissolve certain noble gases into freon in a pressurized ...
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Why is Barium Phosphate soluble in dil HCl? [closed]

Why is Barium Phosphate soluble in dil HCl While Barium Sulphate is not?
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Solubility of PbSO4

The solubility of $\ce{PbSO4(s)}$ increase with the addition of $\ce{H2SO4}.$ Why? I don't quite understand this. When dissolving $\ce{PbSO4(s)}$ we get the equilibrium equation: $$\ce{PbSO4(s) <=...