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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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why HI isn't fully miscible with cold water when HF is?

HF is more soluble in water than HI , due to greater hydrogen bonding in HF , accepted but, on the other hand HF is a very weak acid so it's dissociation will be meagre when compared to HI's ...
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Solubility of substances in HF; High Solubility of Substances in Most Hydrogen-Bonded Compounds

Across my chem course, I noticed that HF does not dissolve several ionic and covalent compounds. What sort of compounds are soluble in HF? Or do no compounds dissolve in it? And why are hydrogen-...
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24 views

What solvent can dissove both antimony chloride and titanium isopropoxide?

Am trying to create antimony doped titanium dioxide thin film. I plan on doing so with SILAR(successive ionic layer adsorption and reaction). My cationic precursor will be a solution of both antimony ...
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4answers
840 views

Ionic compound having highest solubility in water

Which ionic compound has highest solubility in water? I can find CsBr having highest solubility with 1230 g/L at 25 °C. Note: compounds like ethanol are soluble to any extent in water, but they are ...
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1answer
434 views

Non-Linear Solubility Trend

I am doing a lab on carbon dioxide solubility in water and I have a non-linear trend which seems to agree with the accepted trend. I am examining the change in solubility as a function of temperature. ...
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2answers
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What explains the stark white colour of my iodometric titration analyte solution?

During my Advanced Higher (secondary school) investigation, I reacted pure copper with concentrated nitric acid to acquire a copper nitrate solution. This was neutralised with excess sodium carbonate ...
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I need help to explain the reaction of a dissolvable magnesium alloy to the masses (Reaction within) [closed]

We use a Magnesium based metal alloy in an application where when the alloy is exposed to water with a high salinity (Chlorides) it dissolves. The below chemical reaction was provided and we would ...
3
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1answer
43 views

Is there a Material that is High Heat Resistent and soluble?

What i‘m looking for is any sort of material that dissolves, while being able to resist temperatures of up to 1000°C. And it doesn‘t have to resist during dissolution, only while it‘s solid. And the ...
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13k views

How much carbonation is in one liter of commercial fountain Coca-Cola

From what I understand generally Coke is carbonated to roughly 6.2 g per liter in bottles and cans, or 3.1 volumes of CO2. I was watching this video because I was curious about how fountain soda ...
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1answer
20 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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2answers
19k views

Why does solubility of solids sometimes decrease with temperature increase?

Recently I was researching $\ce{Ca(OH)_2}$, and I found this on Wikipedia: \begin{array}{|c|l|}\hline {\rm \color{blue}{Solubility~in~water}} & {\mathrm{0.189\,g/100\,mL}\ (0\,^\circ\mathrm{...
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Why gas solubility decreases with temperature? [duplicate]

I found this quote on a Chemistry LibreTexts website: If the heat given off in the dissolving process is greater than the heat required to break apart the solid, the net dissolving reaction is ...
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1answer
550 views

Why is magnesium sulfate acidic? Why are my calculations showing that it is basic?

Let's say I was dissolving $\pu{1M}~\ce{MgSO_4}$ into water and I wanted to find the pH. I would go right to the reaction of the dissociation of $\ce{Mg(OH)_2}$: $$\ce{Mg(OH)_2 <=> Mg^2+ + 2OH-}...
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1answer
1k views

Calculating concentration of dissolved gas from its mole fraction

I came across the following (solved) problem in my textbook: The Henry's law constant for $\ce{O2}$ dissolved in water is $\pu{4.34 \times 10^4 atm}$ at $\pu{25 ^\circ C}$. If the partial pressure ...
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2answers
243 views

How to measure saturated salinity and mineral levels for flaked sea salt?

I am a sea salt enthusiast looking to make the perfect flakey sea salt. I start with sea water and boil it down to a thick brine. Then with less heat I reduce the brine more slowly and inverted salt ...
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0answers
26 views

Adding Heat to food

So, I am trying to use Pure Caspsaicin to add a little heat to some food. Now the pure Caspsaicin has come in crystal form they are Lipophilic so I have to use Glycerin to dilute it. Now my issue. ...
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3answers
469 views

Calculating the density of a saturated salt solution

Is there a way to calculate the density of a saturated salt solution from the solubility limits or does it have to be experimentally determined? First instinct, is to add the mass of the salt to ...
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1answer
51 views

What is the minimum mass of iron(III) chloride required to be added until the dark blue precipitate first appear?

How do I solve this question? The presence of iron(III) ion is confirmed in a qualitative analysis by adding potassium hexacyanoferrate(II) ($\ce{K4[Fe(CN)6]}$) solution. A dark blue ...
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1answer
8k views

Alkali metal carbonates, their thermal stability and solubility

From Li to Cs, thermal stability of carbonates increases. From Li to Cs, due to larger ion size, hydration enthalpy decreases. So, solubility should decrease from Li to Cs. But, experimentally, order ...
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1answer
45 views

Oxygen Solubility in Water

This is probably really obvious, but I really don't understand. Why does oxygen dissolve in water when oxygen is a nonpolar molecule and water is a polar molecule? It's obvious that oxygen does ...
3
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1answer
41 views

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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1answer
58 views

How does a mostly non-polar molecule prevent a polar head from being pulled off by other polar molecules?

Linear-shaped molecules of a solute with a large non-polar section and a small polar head are not soluble in a polar solvent. Why is this? Why don't the attractive forces between a molecule of polar ...
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2answers
1k views

Fajans' Rules Versus Lattice Enthalpy

In analyzing the solubility among $\ce{CaF2, CaCl2, CaBr2}$, I found that $\ce{CaF2}$ is insoluble due to high ionization enthalpy. But comparing among $\ce{AgF, AgCl, AgBr }$, it was said that $\...
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16k views

The solubility of haloalkanes in water

Haloalkanes aren't very soluble in water because they can't form hydrogen bonds, and the energy required to break hydrogen bonds in water etc is higher than the energy released when new bonds between ...
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1answer
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What is the solubility of quinine suphate in 98% ethanol?

I have a result from an experiment that really bothers me, yet I found no sources online that can explain the situation. While quinine is relatively soluble in ethanol because they are both non-...
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1answer
102 views

Determine the concentration of hydrogen cations to prevent precipitation of monocalcium phosphate?

Determine the $\ce{[H+]}$ needed to just prevent precipitation by $\ce{H2PO4-}$ in a $\pu{0.25 M}$ $\ce{H3PO4}$ solution that has $\ce{[Ca^2+]} = \pu{0.15 M}$. The $K_\mathrm{a1}$ of $\ce{H3PO4}$ is ...
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1answer
37 views

Acids using different solvents [closed]

Many polar protic solvents exist and ionic compounds are able to dissolve inside these substances for the same reason as water. So, theoretically, if a substance were to steal a $H^+$ ion from a polar ...
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4answers
2k views

Are there any sodium salts that are insoluble in water?

Are there any sodium salts (e.g. NaCl) that are insoluble in water? If so, what are their approximate $K_\mathrm{sp}$ values?
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3answers
76 views

If Mg(OH)2 is insoluble, why does the reaction of MgO and water produce a slightly alkali solution? [closed]

The equation of the reaction is: Mg(OH)2 + H2O -> Mg(OH)2. Why is it that this reaction produces a solution of around pH 9? There are no OH- ions produced.
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3answers
76 views

molar solubility of CaF2 at pH3 given molar solubility at pH7 and pKa of HF

Here was my attempt #$1$ at a solution. $K_{sp}=[Ca^{2+}][F^-]^2$ Using the information at pH=7, I estimated that $K_{sp}\approx3.7\cdot10^{-11}$, which means that barely any HF formed. I assumed ...
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1answer
75 views

Calculating molar solubility of calcium hydroxide from solubility product

On the Wikipedia page for calcium hydroxide, the stated solubility product for $\ce{Ca(OH)2}$ is $K_\text{sp} = \pu{5.5 * 10^{-6} M^3}$. It doesn't stipulate the temperature, but I have a chemistry ...
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1answer
30 views

How to correctly apply Law of mass action

While studying ionic equilibrium I came across a relation between solubility and solubility product for ternary salt. This is what was written in my book. Let the solubility of ternary salt $AB_2$ ...
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2answers
537 views

How to dissolve white dextrin in water?

Dextrin is labelled as highly soluble in water. I have white dextrin (analytical from Sigma Aldrich). When I mix it in water, no matter how long I stir and how little dextrin I put, I get a suspension....
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1answer
25 views

Fishes and Heater

I had an aquarium for about an year and this week my mum just installed a heater in it. On asking, she told me that fishes would die in cold water. But from Henry's Law, isn't it that more oxygen ...
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2answers
786 views

Carbon Dioxide Solubility in Water

I did a lab where I tested the solubility of carbon dioxide in water at different temperatures. I took 50 mL of carbonated water at different temperatures and then I titrated that with sodium ...
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2answers
90 views

Crystallisation problem

I have an aqueous solution of N,N-dimethylphenylalanine methyl ester hydrochloride and I need to crystallise it as a salt. I'm afraid of increasing the temperature or the concentration of acid due to ...
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0answers
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Insoluble Nitrate salts? [duplicate]

Are there any Nitrate salts that are generally insoluble in water at room temperature? Textbooks are generally vague about this. They say that all nitrate salts are mostly soluble in water, or that ...
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1answer
27 views

Regarding acid-base reactions, how does one know when a hydrophobic base substance is fully protonated?

When there's a weak base substance (hydrophobic powder), and it needs to be completely protonated by adding an acid (eg: HCl), how does one know when it's completely protonated? Since the powdered ...
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1answer
2k views

Is butanoic acid more soluble in water than ethyl acetate?

I was asked which of the two following isomeric compounds, a carboxylic acid and an ester, was more soluble in water. I believe both molecules should be somewhat soluble in water as they have polar C=...
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1answer
35 views

Which is more soluble in water ammonia or Sodium dodecyl sulfate

I've tried looking this up and can't seem to find the solubility of SDS if any one knows the answer I would really appreciate it. Which is more soluble in water ammonia or Sodium dodecyl sulfate. ...
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2answers
12k views

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?
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2answers
11k views

How is it possible to dissolve zinc oxide safely for skin use, preferably without acid?

Zinc oxide comes as a powder that is insoluble in water but soluble in most acids. I once received a clear liquid containing zinc oxide from an Italian pharmacy as a deodorant. What could they have ...
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1answer
42 views

Advice on forming a 10% solution of Maltol

I’m having great trouble forming a 10% solution of Maltol. Specifically, I’m trying to dissolve 3 grams of Maltol in 27 grams of solvent. I’ve tried everything from Propylene Glycol, to Deionized ...
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1answer
300 views

Treating a sample with water, how to deduce present compounds given precipitate and solution parameters?

A sample consists of one or more of the following salts: $\ce{Cu(CH3CO2)2}$ (acetate), $\ce{BaCl2}$, $\ce{(NH4)2SO4}$, $\ce{SrCO3}$, $\ce{KNO3}$. The sample, when treated with water, gives a white ...
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1answer
253 views

How is silver chloride more soluble in brine than water?

I heard that: Silver chloride is more soluble in very concentrated NaCl solution (brine) than in pure water. Is it true? I mean won't the common ion effect operate? Or may be this is due to some ...
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1answer
75 views

Insoluble salts and Gibbs free energy

Is it true that according to gibbs free energy equation, insoluble salts such as AgCl don't dissolve because the process would be too endothermic? The right side of the equation, TΔS, would have to be ...
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1answer
51 views

Any consumable liquid that would dissolve ground coffee?

Figured I would try here rather than a food-oriented forum. Is finely ground coffee (Espresso/Turkish) soluble in any consumable liquid? Otherwise asked: is there any liquid available to the average ...
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2answers
58 views

Writing Ksp when the ions are on the left of the equilibrium equation?

For the equation: $\ce{Ca^{2+} {(aq)} + ^-OOC-COO- {(aq)} <=> Ca(OOC-COO) {(s)}}$ My book gives $K_{sp} = \pu{3.0e-9 M} = [\ce{Ca^{2+}}] \times [\ce{^-OOC-COO-}]$. However, as per Chem....
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1answer
225 views

Solubility curve for sodium tetraborate in water

What is the solubility curve for sodium tetraborate decahydrate ($\ce{Na2[B4O5(OH)4]·8H2O}$), otherwise known as borax, in water ($\ce{H2O}$)? Additionally, what is the solubility of the ...
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0answers
52 views

Looking for solubility kinetics of zinc chloride hydroxide monohydrate

$\ce{Zn5(OH)8Cl2.H2O}$ is a crystalline solid insoluble in water. Often used as nutritional supplement. Preparation and chemistry of zinc chloride hydroxide monohydrate is known. I am looking for some ...