For questions related to the solubility of compounds in various solvents, especially in water.

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How to calculate the amount of substance of nitrogen that dissolves in water?

The Henry's law constant for the solubility of $\ce{N2}$ gas in water at $298~\mathrm{K}$ is $10^5~\mathrm{atm}$. The mole fraction of $\ce{N2}$ in air is $0.8$. The amount of substance of ...
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The behaviour of Ag3PO4 in solution

To a 1L flask, we add $4.1900\mathrm{g}$ ($0.01001\ \mathrm{moles}$) of $\ce{Ag3PO4}$, then fill it up with water. Knowing the following constants, we are asked to find the concentration of all ...
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49 views

Why do alcohols and ethers have approximately the same solubility in water but different boiling points?

In Morrison & Boyd, I found this question: Butan-1-ol (b.p. $118~\mathrm{^\circ C}$) has a much higher boiling point than its isomer diethyl ether (b.p. $35~\mathrm{^\circ C}$), yet both ...
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Crystallisation [closed]

A tank holds 10,000 kg of a saturated solution of sodium hydrogen carbonate at 60 degrees Celcius. You want to crystallize 500 kg of sodium hydrogen carbonate without any accompanying water from this ...
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A problem in ionic equilbrium

Question 1998(b) My attempt: I thought that $\ce{AgCl}$ would yield $\ce{Ag+}$ and $\ce{Cl-}$ ions, whose concentration can be found from $K_{sp}$ as $\sqrt{K_{sp}}$. This $\ce{Ag+}$ reacts with ...
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Understanding effect of ph on solubility of salt

In the following picture why Ksp is not simply S2- ? Why is f included with one species only? Please explain the last part. What does f represent and why it is used in molar solubility?
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How to filter out magnesium acetate (a soluble salt) quickly and cheaply from water

I am conducting an experiment that involves reacting a weak acid and a weak base to form water and a salt with this overall equation $$\ce{Mg(OH)2(s) + 2CH3COOH(l) <=> 2H2O(l) + ...
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Moderately soluable

In solubility rules, there is some exceptions. It says for example: All sulfate ($\ce{SO4^2-}$) compounds are soluble except those of $\ce{Ba^2+}$, $\ce{Sr^2+}$, $\ce{Ca^2+}$, $\ce{Pb^2+}$, ...
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Solubility of n-butanol and n-butanamine

I ran across something saying that n-butanamine is miscible in water while butanol is only partially soluble. Is this correct? Can anyone offer an explanation? I would have guessed that the decreased ...
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1answer
45 views

Freezing Point Depression Problem

Assuming an ideal solution, which of these 0.10 M solutions would have the least freezing point depression? $\ce{HCl}$ $\ce{NaBr}$ $\ce{KNO_3}$ $\ce{MgSO_4}$ They all produce ...
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31 views

What solutes will give the largest reduction in volume when dissolved in water

This question is inspired by another question. If you take some common salt (NaCl) and some water and mix them, then the volume of the solution is less than the volume of the constituents. I did ...
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Solubility of succinic acid in water vs ethyl acetate?

Today I completed an organic lab practical test about discontinuous extraction. I had to extract succinic acid from a water solution using ethyl acetate as the solvent extractor. After the ...
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Unique Solubility Expression for Sulfide Salts

While looking at aqeuous $\ce{K_{sp}}$ values in the back of my textbook, I noticed that there is a asterisk by all of the sulfide compounds (such as $\ce{HgS}$), and the asterisk says, "For a ...
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1answer
21 views

Mixing a Tagged Sample of Lead Iodide with another Iodide Salt [closed]

A sample of sparingly soluble $\ce{PbI_2{(s)}}$ containing radioactive $\ce{^{133}I}$ is added to 0.10 M $\ce{KI_{(aq)}}$ and stirred overnight, what happens? I The radioactivity of the liquid phase ...
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How to calculate saturation point of a solution?

Is there a way to calculate theoretical saturation point between 2 materials? For example, let's say I want to determine solubility of vitamin A in water, or vitamin B in olive oil, or vitamin D in ...
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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 ...
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Are gold ions the most powerful pure element agent for dissolving metals in water?

You can use hydrogen ions (basically acids) to dissolve metals in water with redox reactions. $$ \begin{array}{c c c c} & E_{\ce{2H^+ + 2e^- -> H2}} & = & 0{V} \\ + ...
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Preventing precipitation of Ca(HPO4)2

Determine the $\ce{[H+]}$ needed to just prevent precipitation by $\ce{H2PO4^-}$ in a 0.25 M $\ce{H3PO4}$ solution that has $\ce{[Ca^{2+}]}$ = 0.15 M. The $K_{a1}$ of $\ce{H3PO4}$ is $7.1 \times ...
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Does exothermic solvation mean solute is more soluble at low temp?

(I'm surprised this question or a very similar one hasn't been asked, so I wouldn't be surprised if I just failed to find a question with my search that does answer this question.) I dissolved some ...
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solubilities of inorganic and organic compounds [duplicate]

a saturated solution of o-nitrophenol, has a pH equal to 4.53. what is the solubility of o-nitrophenol in water. pKa for 0-nitrophenol is 7.23. though its a basic problem i still cant answer it. ...
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How can I dissolve monolaurin/glycerol monolaurate?

I am trying to prepare a solution of glycerol monolaurate (GML) based on this study in which GML was dissolved in ethanol to a final concentration of 25 μg/mL. However I would not like to use ethanol ...
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Poor aqueous solubility of chloroazodin

Below is the structure of chloroazodin: Why is chloroazodin poorly soluble in water? It has multiple amine and imine nitrogens, all of which appear to be available for hydrogen bonding, and thus it ...
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Relative Solubilities of Salts in Acidic Solution [closed]

While studying for the Chemistry Olympiad, I stumbled across this problem which I don't understand the answer to: Which solid is much more soluble in 1 M $\ce{HCl}$ than in $\ce{H2O}$? (A) ...
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Solution , Solubility and Colligative Property? [closed]

Which of the following 0.1 M aqueous solution will have the lowest freezing point ? 1) Glucose 2) Urea 3) NaCl 4) K2SO4 How to relate Molarity with freezing point ? Should I use the relation ...
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Why does adding PBS to a lipid+propylene glycol solution cause the lipid to precipitate?

I am trying to create an aqueous phospholipid suspension using ~50 mg of 1,2-dibehenoyl-sn-glycero-3-phosphocholine (DBPC), 13 mL of propylene glycol (PG), and 72 mL of phosphate-buffered saline ...
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What is the chemical equation for this specific titration experiment and the solubility of the potassium nitrate solution?

In the experiment I performed a titration by adding 5cm3 0.25M KNO3 (saturated with AgBrO3), 10cm3 1M HCl and 10cm3 10% HI solution together and allowed to sit for 3 minutes. The chemical equation I ...
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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 ...
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Solubility of Alum

What is solubility product of $\ce{K2SO4. Al2(SO4)3.24H2O}$? Can we consider $K_{\rm sp}$ of salts $\ce{K2SO4}$ and $\ce{Al2(SO4)3}$ or something else to find solubility? I know that ...
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How to read solubility graph

The following table is showing the solubility of CO2 at different pressures. However, I cannot figure out how to read this graph. The y-axis is molar fraction so that should mean that its value = ...
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Formula of ionic compound for solubility equilibria

I have a question for writing formula of ionic compound for solubility equilibria. $$ \ce{CaSO_4 (s) <=> Ca^{2+} + SO^{2-}_4} $$ Where do $2+$ and $2-$ come from? $$\ce{Ag_2CrO_4 (s) ...
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solubility of silver benzoate

The ionisation constant of benzoic acid is $6.46*10^-5$ and Ksp of silver benzoate is $2.5*10^-13$. How many times is silver benzoate more soluble in a buffer solution of pH-3.19 as compared to water. ...
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Precipitation Reactions Question

Salts of $\ce{Fe^3+}$ and $\ce{Al^3+}$ are in a beaker of water. If NaOH is added slowly, what compound would precipitate first? For me, I think it's Fe^3+ because of its lower Ksp value when it ...
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Why do some insoluble salts undergo slow chemical reaction instead of dissociation in water?

$$\ce{PbCl2 + H2O ->[\Delta] Pb(OH)Cl + HCl}\tag{1}$$ $$\ce{2ZnCO3 + H2O ->[\Delta] Zn2(OH)2CO3 + CO2}\tag{2}$$ $$\ce{2NiS + 2H2O → Ni2(OH)2S + H2S}\tag{3}$$ $$\ce{Hg2SO4 + H2O → HgO + Hg + ...
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Why are amines more soluble than ethers in water?

For example, diethyl ether ($\ce{C2H5OC2H5}$) has a limited solubility of $6.05\rm~\frac{g}{100~mL}$ water at $25\rm~^\circ C$. However, diethylamine ($\ce{(C2H5)2NH}$) is a lot more soluble in water. ...
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How does increasing the molecular mass of compounds of homologous series affect solubility?

First of all, I know that increasing the molecular mass decreases the solubility of that compound wrt, of another compound of the homologous series in organic chemistry. My question is how? My text ...
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Solublity values interpretation

"Solubility: Soluble in water (>25 mg/ml), and DMSO (50 mM)." It happens to be talking about a drug but that's irrelevant to my question. Does this solubility statement reasonably indicate that I ...
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Potassium Alum Crystals

This is a question regarding the crystallization of KAl(SO4)2 * 12H2O. I have an idea of what to do (I'll explain later in the explanation), but I would like to hear other suggestions encase the ...
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Solubility Enthalpy of NaHCO3 [closed]

What is the solubility enthalpy of $\ce{NaHCO3}$ at 25 degree Celsius ($\mathrm{298K}$)?
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Why ethoxyethane is not very soluble in water? Since, oxygen in ethoxyethane is electronegative, as oxygen in water

If the reasons is related to polarity, I have another question. Why water is polar it is also symmetrical?
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Which substance(s) can solve gelatin (on film stock)?

I want to loosen the exposed layer on film stock which is made up of gelatin. Anything which would make gelatin dissolve that's not overly toxic? Thanks
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1answer
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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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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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Why are critical micelle concentrations so large?

Dissolving a non-polar molecule in water incurs a free energy cost of about $10 kJ/(mol \cdot nm^2)$ (source: http://bionumbers.hms.harvard.edu/bionumber.aspx?&id=101826) The entropy gained from ...
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Improving efficiency of absorption refrigerator (ammonia+hydrogen)

Apologies if this is not the right forum for this question, I checked the Physics side and there's no questions on this, whereas there's at least one other question here about absorption ...
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Is Carboxylic acid more soluble than ester? [closed]

Which is more soluble in water? I believe both of are sort of soluble in water as they have C=O and C-O, polar bonds which make them polar compound. But I'm not really sure how the structure can ...
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The solubility of sugar at 30 degree Celsius is 220 . What do you mean by this? [closed]

The solubility of sugar at 30 degree Celsius is 220 . What do you mean by this?
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How would mixing sea salt and honey affect the water activity of honey?

Honey has around 20% water content which is one mechanism of it's antibacterial action. If I mixed equal parts of honey and salt how would this affect the water content/activity of honey? Would it ...
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Precipitation of Calcium ions in basic Sodium Hydroxide solution?

I recently conducted an EDTA titration of milk to find its Calcium contents. I got a value significantly smaller than the theoretical value. (≈10 times smaller). I made $50ml$ samples to which I added ...
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Recrystallization of salts with similar solubilites

If you had two solutions, for example, 100 ml each of 0.5 M $\ce{RbCl}$ and 0.5 M $\ce{NaBr}$, at 20 °C, where the salts have very similar solubility in water, and you mixed the solutions, and allowed ...
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Solubility in water in relation to temperature

Background: I'm looking for a substance which stores energy most efficiently when oversaturated. In technical terms: a substance whose graph in a diagram of temperature (x-axis) vs the soluble amount ...