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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17 views

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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65 views

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 pH: In a titration between a weak acid $\ce{HA}$ and weak base $\ce{B}$ (adding base into acid solution) the following ...
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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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Solubility product [closed]

A solution containing 0.100 M HF also contains 0.0100 M Ca(NO3)2. Hydrochloric acid is added slowly till the solution has a pH of 2.00. Will a precipitate of calcium fluoride,CaF2 occur? for the HF, ...
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68 views

Which metal ions precipitate in NH4OH?

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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Are nonpolar non-ionic solids soluble in any solvent? [closed]

I am wondering about dissolving nonpolar non-ionic solids. 1) Do elemental solids (e.g. solid elemental Barium) display any solubility as such (i.e. without reacting with the solvent / being ionised) ...
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41 views

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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37 views

How do I calculate for the solubility of Ca3(PO4)2 in Phosphoric Acid?

I know that the common ion effect will decrease the solubility of $\ce{Ca3(PO4)2}$ since Phosphoric acid has a same anion. However, phosphoric acid is a weak acid so I am really having a hard time ...
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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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53 views

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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21 views

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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67 views

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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1answer
58 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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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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42 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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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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34 views

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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83 views

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) <=...
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while using Henry's law does it matter if the solvent is volatile or not?

I am studying about binary solutions (with liquid solvents) and came across Henry's law. This is how it's stated in my textbook: Henry's law states that at a constant temperature the solubility of ...
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CaSO4 precipitate in mixture of Na2SO4 and CaCl2 solutions

I have been stuck on a chemistry problem for a long time now and if anyone here can help me I would be eternally grateful. 40. Du tillsätter $\pu{100 ml}$ $\pu{0,01 M}$ $\ce{Na2SO4}$-lösning i $\pu{...
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Given solubility of sodium carbonate, find mass of hydrate sodium carbonate dissolved?

I am working on a problem from my scholarship exam practice (MEXT). I am not quite sure if I got it right. The question was provided with multiple choices (a) to (f) below: The solubility of sodium ...
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147 views

Solubility in different pressure conditions

I am working on my scholarship exam practice. I believe this exam assumes high school + first year university knowledge. And I'm not quite sure what I did wrong. Could you please have a look? The ...
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Sodium bicarbonate, varying acetic acid, measuring carbon dioxide volume, understanding results

With my 6yo daughter, I have conducted a simple experiment. We used 1/4 tsp (we don't have sub-gram scales) of bicarbonate of soda for each test. In each test, we used a different amount of vinegar (5%...
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195 views

What happens if you mix two insoluble liquids but with the same density? [closed]

Would it make two separate phases? or would it make something like and emulsion?
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Saturation dissolved oxygen level at pressure

The saturation level of dissolved oxygen in contact with a moist atmosphere is $$c = 0.21(p_\mathrm{atm} - p_\mathrm{vap}) K_\mathrm{H} M$$ where the $p_\mathrm{atm}$ and $p_\mathrm{vap}$ are the ...
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Cleaning a stubborn Electrospray residue

I have an electrospray ionization capillary tip that sprays into a chamber that contains some circuit boards. An aqueous CsI sample is apparently causing a white residue to build up on these boards ...
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Comparing solutbility of acetanilide and diethyl ether in water

Would acetanilide be more soluble in water at 25 degrees Celsius because it has an $\ce{N-H}$ and an oxygen that can participate in hydrogen bonding, whereas diethyl ether only has an oxygen?
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156 views

pH of a Calcium Hydroxide vs Magnesium Hydroxide solution [closed]

In an AQA 2017 Chemistry paper, a $0.0131 \pu{mol}\cdot\pu{dm^-3}$ saturated solution of calcium hydroxide is prepared and then the question asks to predict the pH of a similar solution of magnesium ...
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173 views

Solubility of Iodine in Some Organic Solvents

The solubilities of iodine in $\ce{CCl4,n-Hex,Et2O,PhCH3}$ were given respectively as 19 g/kg, 13 g/kg, 337 g/kg, and 182 g/kg. These results puzzle me for the following reasons: 1) Iodine, being a ...
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51 views

Can you lower the alcohol concentration of a drink using vegetable oils?

The log POW of ethanol is −0.18 according to Wikipedia, i.e. in a two-phase system ethanol would preferrably accumulate in the aqueous phase, but not by much. Suppose I wanted to lower the alcohol ...
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50 views

Precipitating silver(I) salts from the solution of barium(II) cyanate and iodide

Consider a $\pu{10.0 mL}$ solution containing $\pu{1.0e-10 M}$ each of $\ce{Ba(CN)2}$ and $\ce{BaI2}$. If $\pu{3.5e-9 mol}$ of $\ce{AgNO3(s)}$ is added to this solution, will any precipitate(s) form? ...
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Why is Lithium Chloride (LiCl) soluble in alcohols?

According do J.D. Lee's Concise Inorganic Chemistry, LiCl is soluble in alcohols because it has some covalent nature, althought it is mainly polar. Why would LiCl have covalent character? Why doesn't ...
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How can I dissolve photography film?

I am looking to completely dissolve negative film strips. Acetone was my first try and did not work. If anyone knows/ or has any ideas i would be so greatful.
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Mixture of water, methanol and dichloromethane

If I have a mixture of 25 vol% methanol in water and I mix it with an equal volume of dichloromethane (which is miscible with methanol but not water) can I roughly say that both phases (i.e. water and ...
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63 views

Anhydrous magnesium sulfate

Can anhydrous magnesium sulfate be used instead of epsom salt for feeding plants? Do hydrates and anhydrous salts become the same when dissolved in water?
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Stoichiometry based on addition of simultaneous equilibria

I read on another equilibrium question that if two equilibria occur at the same time, then it is not accurate with actual stoichiometry to add the two equations and multiply the equilibrium constants $...
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1answer
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Solubility of lead phosphate

I've read that lead phosphate is very slightly soluble and so any addition of protons shifts the equilibrium back to the solvated ions. What I can't understand is why the lead phosphate is more ...
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For azeotropic mixtures, is the total vapour pressure at equilibrium equal to the partial pressure of one of the components?

I know, a ridiculous statement. But here's how I reached at it . Say we have a solution of two components liquids A and B. By Raoults law, $$p_A= p_A^o \times x_A \tag1$$ Also by Dalton's law, $$...
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What is the percent of potassium as K₂O in the fertilizer sample?

The solubility of sodium tetraphenylborate in water is $\pu{470 g/L}$ while the solubility of potassium tetraphenylborate in water is $\pu{1.8e–4 g/L}$. Due to the orders of magnitude difference in ...