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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4
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3answers
5k views

How to calculate the solubility product for PbS from galvanic potential?

Knowing that at 25 °C the following galvanic cell: $$\ce{Pb~|~Pb(NO_3)_2~1M~||~PbS~saturated~|~Pb}$$ shows an $\mathrm{EMF} =0.413~\mathrm{V}$, find the $K_\mathrm{sp}$ of $\ce{PbS}$. My Approach ...
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1answer
828 views

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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1answer
58 views

Calculating the Ionic strength of sodium acetylsalicylate

With the addition of aqueous NaOH to an aspirin solutions in water the reaction will yield products of sodium acetylsalicylate and water. I would like to measure the amount of sodium apsirin formed ...
2
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1answer
107 views

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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2answers
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Mixing solvents, or how does paint thinner work?

I would like to understand how a mixture of solvents works together. For example, there are two solvents combined, and each one alone can dissolve some material, but one acts faster. How do they ...
2
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1answer
46 views

Medroxyprogesterone [closed]

Hi, I have a question regarding my university assignment. In this case; it’s medroxyprogesterone. We all know that it’s a hydrophobic drug, hence, we are assigned to create a sterile injection in ...
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3answers
14k views

Why is heating increasing the solubility of sodium hydroxide?

\begin{align} \ce{NaOH &-> Na+ + OH-} & \Delta H^\circ &= \pu{-44.51 kJ/mol} \end{align} The dissolution of sodium hydroxide in water is an exothermic process, and so, according to Le ...
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0answers
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Carbon Capture Absorption with Henry's Law

Assume the Henry’s coefficient for water at $\pu{20 °C}$ is $\pu{1.6E8 Pa}.$ What is the mole fraction of $\ce{CO2}$ that will be dissolved in water assuming that it is at equilibrium with a flue gas ...
2
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1answer
205 views

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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Isolating barium(II), copper(II) and zinc(II) from aqueous solution [closed]

Q15 Each metallic ion was separated from an aqueous solution containing $\ce{Ba^2+},$ $\ce{Cu^2+},$ and $\ce{Zn^2+}$ by the procedure shown in the following figure. From ①–⑥ in the table below choose ...
4
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1answer
366 views

Calcium ion and sulfate did not form precipitate

I was in the chemistry lab earlier this week. We were doing a qualitative experiment (no concentration given for any solution). I added an unknown solution that contains $\ce{Ba^2+},$ $\ce{Ca^2+},$ ...
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43 views

Can sodium silicate be made insoluble?

In this question, the user asked about curing sodium silicate with calcium chloride. My question is, will the resultant product be insoluble in water? I know calcium silicate is only very slightly ...
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1answer
57 views

Does air dissolve in the R-113 (i.e. Freon 113)?

Can anyone tell me whether or not air or N$_2$ dissolves easily in the R-113 (liquid solvent) under the saturation pressure of R-113? If yes, what is the solubility roughly? From this link one can ...
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0answers
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I want a certain Ion in my solution. How do I choose which chemical to buy?

thanks for taking the time. I am physicist doing experiments in which I need certain Ions (at the moment, Ru(II)) in solution. I have no chemical training excepting what I'm learning right now. What I ...
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0answers
46 views

Calculating the solubility of aspirin in water

I am trying to investigate the relationship between the solubility of aspirin in water with the relationship to some variables. In my investigation, I seem to be stuck with the calculation of finding ...
1
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1answer
121 views

Why does a lowered dielectric constant cause RNA/DNA precipitation in ethanol precipitation?

For ethanol precipitations, as mentioned in https://en.wikipedia.org/wiki/Ethanol_precipitation, given that the attraction of water molecules to charged ions like phosphates is based on Coulombic ...
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1answer
3k views

How to make pyramid-shaped NaCl salt crystals

I'm attempting to make sea salt pyramids like the one below. I understand this needs to be evaporated at a reasonable speed to stop the crystals forming a cube, as the when formed quickly, the edges ...
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2answers
101 views

Is carbon dioxide soluble in petroleum ether, and why?

I googled it, and I'm finding some forum posts that say no, but no authoritative reference. CO2 is somewhat soluble in water (1.7 g/L at 20°C) and I understand that it's mostly NOT because it forms ...
9
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1answer
2k views

Vapor pressure of immiscible liquids

I have read that vapour pressure of a mixture of two immiscible liquids is $$P=P^0_A + P^0_B$$ where A and B are immiscible liquids. If they are immiscible, they would form separate layers. Thus ...
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0answers
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Activity of NaCl aqueous solution at high ionic strengths: Common-ion effect

Is there any theoretical way to estimate the activity of $\ce{NaCl}$ at high ionic strengths in water and that in $\pu{7 M}$ $\ce{NaCl}$ solution? This question is based on whether solubility of $\ce{...
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2answers
917 views

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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1answer
52 views

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
28 views

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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3answers
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What is the maximum molarity of aqueous HCl?

Here is a problem a made up: We have some aqueous $\ce{HCl}$. What is the maximum possible molarity of the $\ce{HCl}$? How do I solve this? I don't have any good ideas.
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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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2answers
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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 ...
4
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1answer
111 views

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
57 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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2answers
3k views

Is Mg(OH)2 more insoluble than MgCO3?

In removing temporary hardness by boiling, $\ce{Mg(HCO3)}$ is converted to $\ce{Mg(OH)2}$ but not $\ce{Mg(CO3)}$. The answer that I found in our coursebook was that it has a higher solubility product, ...
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1answer
277 views

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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1answer
43 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 ...
2
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1answer
50 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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1answer
64 views

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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7answers
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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 ...
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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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1answer
160 views

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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1answer
20k views

Are all NO3- salts soluble in water? If so, why?

All the examples of $\ce{NO3-}$ salts are soluble in water (all that I know about). Is it always so or there is some salt which doesn't dissolve in water? If so what is the reason behind it?
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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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1answer
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carbon dioxide in liquid and gaseous phase with liquid water

What are the differences between carbon dioxide solubility (miscibility, reaction) in liquid water when in gaseous ($\pu{<38 bar}$) and liquid ($>\pu{38 bar}$) phase? The temperature in my ...
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0answers
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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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1answer
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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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1answer
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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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1answer
70 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 ...
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1answer
143 views

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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0answers
68 views

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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Are lithium bicarbonate and magnesium bicarbonate both soluble in water?

Are lithium bicarbonate and​ magnesium bicarbonate both soluble in water? Source: JEE Mains 2017 (National Level Examination of India) Please do cite a reputed source along with your answer. ...
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483 views

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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1answer
36 views

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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0answers
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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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