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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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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....
8
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0answers
898 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 ...
2
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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-}...
3
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1answer
239 views

Finding equilibrium constant from solubility product constant

Given $$\ce{CuI(s) <=> Cu+(aq) + I-(aq)}\, ;\qquad K_\mathrm{sp} = 1.2 \cdot 10^{-12}$$ write a reasonable chemical reaction that describes the decomposition of $\ce{CuI2}$ in aqueous ...
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1answer
43 views

Can i calculate the solution of the problem in more simple way?

and i got a serious question. During my exercises at home, i found that im struggling a lot while solving simple problem`s like this one: I have an aquatic substance with 0.100 M of $\ce{Mg(NO3)2}$ ...
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0answers
28 views

How do dendrimers increase solubility of therapeutic drugs?

Found lots of articles that explain what a dendrimer is, but none that actually explain HOW they increase solubility. Would appreciate any help, thanks!
4
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0answers
568 views

Why is potassium bitartrate so insoluble?

The solubility of potassium bitartrate in water at 20°C is given by Wikipedia as 0.57 g per 100 ml, which is considerably lower than that of sodium bitartrate. Generally, a potassium salt is more ...
2
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0answers
242 views

Solubility of Calcium Oxalate in Aqueous Alcohol?

In searching through the literature for the solubility of calcium oxalate, I came across this post https://www.researchgate.net/post/Are_there_any_organic_inorganic_solvents_for_dissolving_Ca-oxalate ...
3
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2answers
79 views

Material that changes solubility when electric potential is applied [closed]

I am looking for a material witch is easy to deposit in thin films and which changes its solubility if a electric potential is applied. Do you know of any such materials ? EDIT: This is for what I ...
4
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1answer
84 views

A problem in solubility of salts with multistep hydrolysis of an ion possible

Calculate the solubility of $\ce{MnS}$ in pure water, $K_\mathrm{sp}(\ce{MnS}) = \pu{2.5e-10}$. Assume hydrolysis of $\ce{S^2-}$ ion. $K_1$ and $K_2$ for $\ce{H2S}$ are $10^{-7}$ and $10^{-14}$, ...
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1answer
89 views

Calculating weight of soluble salt in a solution

I got a solution which density is $\pu{1.035 g mL-1}$ and it contains soluble salt $\ce{Ba(NO3)2}$ at concentration of $\pu{0.250 M}$. The teacher is asking from me to "clear" the solution from the $\...
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50 views

Synthetic Silica Sand

To preface this question I just want to say that my knowledge of chemistry is all but non-existent, so bear with me and my naïveté. My question is, can one, through the use of an acid or alkaline ...
3
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1answer
263 views

Why would two isomers have different solubilities in water?

I was wondering as to why, e.g. $\ce{CH3CH2CH2CH2OH}$ and $\ce{(CH3)3COH}$, do not have the same solubility in water, considering they both have the same molecular formula.
4
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1answer
220 views

Aluminium sulphate solubility as function of the pH

earlier I asked about how to know the aluminium sulfate solubility as function of the ph (see the previous question here). I found this diagram on the page 57 of Rubin, A. J., & Hayden, P. L. (...
2
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1answer
181 views

How to know the aluminium sulfate solubility as function of the pH?

I'm trying to find a diagram or a reference for to know the solubility of aluminium sulfate $\mathrm{Al_{2}(SO_{4})_{3}}$ in differents pH values. Something like:
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1answer
911 views

Order of Solubility [duplicate]

Why solubility of alkaline earth metals decreases down the group? In my book, it is given that solubility of earth metals increases down the group $$\ce{BeSO4 > MgSO4 > CaSO4 > SrSO3 > ...
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0answers
205 views

Multi-solvent recrystallization to extract solute from glycerol?

I have compound A contaminated with impurity B. Recrystallization in water would not yield pure compound A since impurity B is less soluble in it. The only solvent in which substances A and B have ...
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0answers
123 views

Beryllium iodide and solubility rules [closed]

The beryllium iodide $\ce{BeI2}$ as covalent compound is apolar, and thus, it should be water non-soluble. However, it is. Making a research on the web, I learned it is just in the middle of being ...
5
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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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0answers
42 views

Formulation solubility?

Creatine is a popular sports/fitness supplement, generally sold as a powder to be mixed with water (usually like 5-10g creatine per serving). However, it is not very "soluble" in water -- barely 13.3g/...
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2answers
108 views

Solid with Boiling Point less than 100 °C [closed]

For an experiment I require a substance which is a solid at room temperature and boils at a temperature lower than 100 °C. Also, this solid should preferably be soluble in water. Are there any such ...
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0answers
107 views

Which substance will crystallize?

My task is to purify a mixture of 4-Nitrophenol, Activated Carbon and 2-Naphthol. The given solvent is Toluene. I am to dissolve my solid mixture until all except the insoluble components are in ...
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1answer
46 views

Cheap antifreeze

We bought a house which has an outside boiler that is inoperable due to the tank freezing. I can repair but filling the boiler with 100 gallons of antifreeze is too expensive. Sodium chloride ...
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0answers
148 views

What happens when dissolving Al in dilute HCl

I'm about to dissolve $\ce{Al}$ in $\ce{HCl}$ dilute to obtain an electrolyte. What reactions are taking place here? I'm aware that $\ce{Al}$ and $\ce{HCl}$ produce $\ce{AlCl3}$ and $\ce{H2}$. But ...
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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
601 views

Explanation for solubility of group 2 halides [closed]

I understand that the solubility (in terms of moles/volume) of group 2 halides increase with increase in anion size, i.e. $$\ce{MF2 < MCl2 < MBr2 < MI2},$$ where $\ce{M = Mg, Ca, Sr, Ba},\...
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1answer
90 views

Effect on solubility by dissolution of other substance (no common ion)

In one of our recent classes on mass and momentum transfer, we studied qualitatively how blood drug concentrations vary after consuming a tablet containing that drug. We considered the following: ...
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0answers
140 views

Can someone explain me the difference in boiling point of water when I add: KBr; CaCl2; AlCl3?

I have noticed (during an experiment) that the boiling point of the solutions created by H2O+KBr; H2O+CaCl2 and H2O+AlCl3 see their boiling point increase. During the experiment, I thought that, ...
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votes
1answer
216 views

Reverse reaction of acid dissociation [closed]

Consider an acid HA with Ka 10^-10 dissociating into its ions as HA⇌H+ +A- My question is-if we introduce solution of pH=3(let's say any weak acid or a buffer) and put ions of A- of 0.1M into it (...
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2answers
2k views

Solubility of Alkali Metal Chlorides

Why does Potassium Chloride less soluble than Sodium Chloride in water, isn't it supposed to be other way round? Since Potassium Chloride would be more ionic than Sodium Chloride?
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1k views

Why curcumin is insoluble in water but soluble in ethanol or acetone?

Why is curcumin soluble in organic solvents like methanol and ethanol but not soluble in water?
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37 views

Does boiling remove preservatives present in noodles?

I am not sure about the nature of the preservatives used in noodles, but does it get removed when we boil raw noodles in water?
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2answers
5k views

Why does like dissolve like?

Polar solvents love polar solutes to be dissolved in it and non polar with non polar. Often said as like dissolves like. Okay, polar loving polar can be understood with help of the facts: same polar ...
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2answers
74 views

chemical possibility in oil - 8th graders have questions for a project

I have a team of kids (8th graders) that are doing the First Lego League competition this year. As part of that they have to come up with a possible solution to a problem that relates to the human ...
0
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1answer
748 views

Solubility experiment of different organic compounds [closed]

Chemistry lab note says that:1) Aromatic acids like benzoic acid and salicylic acid are NOT soluble in water. But they are soluble in 5% NaOH, and 5% NaHCO3. Due to having a large hydrcarbon part (...
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1answer
802 views

Simultaneous solubility of CaF2 and SrF2

Solubility of two electrolytes having common ion when they are dissolved in solution is called simultaneous solubility. How do I calculate the simultaneous solubility of the above mentioned salts ...
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0answers
51 views

How do salts of a weak acid + weak base behave in solution?

Say you have Ammonium Formate in solution, the salt formed by the reaction of Formic Acid and Ammonia. Would both the Formate ion and Ammonium ion protonate and deprotonate, respectively, to form ...
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0answers
72 views

Other liquids for collecting gas by displacement method for SO2

I am looking for a low cost method of quantifying gases evolved from a reaction. The gas mixture is expected to have $\ce{H2}$, $\ce{SO2}$ and $\ce{CO2}$ but likely others too. I am considering using ...
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2answers
380 views

Why does lead(II) acetate does not ionize appreciably?

As this page in this book says, lead(II) acetate is soluble, but does not ionize appreciably. It seems contradictory to me, since, to call a substance soluble means it has high $K_\mathrm{sp}$ (when ...
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1answer
2k views

Why is chitin ordinarily insoluble in water, but soluble after deacetylation? [closed]

Chitin is usually insoluble in water. How does its chemical structure explain this? Furthermore, when chitin undergoes deacetylation, it becomes soluble and forms hydrogen bonds with water. How is ...
2
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0answers
93 views

How can I decrease the Krafft temperature of an hexadecyl sulfate surfactant?

I need to prepare an anionic surfactant from a treatment of cetyl alcohol (hexadecanol) and $\ce{H2SO4}$, and then neutralize it using $\ce{NaOH}$ or $\ce{NH3}$; but sodium hexadecyl sulfate has a ...
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0answers
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How can it be determined that a liquid is saturated with a gas?

How can it be determined if a liquid is saturated with a gas? For example, if I am introducing carbon dioxide to water at 40 PSI at 35F in a sealed container, how would I know at what point the water ...
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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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1answer
209 views

Which is more likely to form: silver chloride or silver phosphate?

If silver nitrate is added to an aqueous solution (such as tap water) that contains both chloride ions and phosphate ions, which precipitate is more likely to form: silver chloride, silver phosphate ...
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0answers
76 views

Solubitity of FeS

I have some questions related to a problem of multiple equilibria and solubility. I have to calculate the solubility of FeS in pure water considering that the second stage of hydrolisis of $\ce{S^2-}$,...
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1answer
104 views

What is the solubility of corundum in water at SATP?

In my textbook called General Chemistry, I could find the solubility of certain substances in water but corundum was not one of them. I've also read some web pages claiming that corundum is insoluble ...
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0answers
50 views

Looking for a low boiling point solvent for MAPI precursors (Lead Iodide (II) and Methylammonium Iodide) [closed]

Things I have thought of till now: Acetonitrile with HI additive Acetonitrile with DMSO additive The problem with the first would be that HI is in an around 55% aqueous solution and water doesn't ...
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0answers
311 views

Why is hydrogen peroxide soluble in ether?

I'm a student in the 11th Grade. Recently I learned that $\ce{H2O2}$ is soluble in ether. According to my previous knowledge, ether is a non polar solvent whereas $\ce{H2O2}$ is Polar and only polar ...
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0answers
207 views

Why is the formation of lead (II) iodide precipitate favoured over that of the tetraiodo plumbate (II) complex ion in low concentrations of iodide?

I was wondering why $$\ce{Pb2+ + 2I- <=> PbI2}$$ occurs in low $[\ce{I-}]$, however when $[\ce{I-}]$ is in excess, $\ce{PbI4^2-}$ is produced with $$\ce{Pb2+ + 4I- <=> [PbI4]^2-}$$ ...
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5answers
3k views

What does it mean to say that a strong base is only slightly soluble?

I've often seen the hydroxides of Calcium, Strontium and Barium described as "strong bases that are only slightly soluble," or similar. But strong bases dissociate completely in solution, so I would ...