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 does the solubility of hydrated ions differ from unhydrated ions?

So the hydrated compound I am thinking about specifically is pentahydrate copper sulphate. I know when you put ionic compounds in water, the ions because hydrated by the water molecules. However, what ...
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Creating 100mg/L aspirin solution

I plan on creating 100 mL of 100mg/L aspirin solution by dissolving 10 mg of pure aspirin powder in 100 mL of buffer solution (of different pHs). Problematically, aspirin doesn’t tend towards ...
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Is there a way of finding solubility/solvent from basic information?

Let's say I have a compound and I want to find a solvent for it. Looking on some where like Wikipedia, it is quite easy to find solubility, in various solvents for common compounds. However it can be ...
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chemically extract sodium from a food for health purposes [closed]

Spirulina is a consumable algae with some benefits and only one downside I have noticed. according to my research 2,300 mg of sodium a day is way too much. 10 OZ. of spirulina contains just under 3,...
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ʟ-Glutamine solubility in hot water [closed]

What happens when you try to dissolve ʟ-glutamine in hot water (above 80 °C)? Does the heat destroy the ʟ-glutamine?
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Why does the solubility of haloalkanes in water decreases as the length of the carbon chain increases?

Due to the polar halogen-carbon bond in haloalkanes, they are more soluble than hydrocarbon in water. But the solubility is still very low because the overall influence of the dipole-dipole ...
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1answer
33 views

Effects of evaporating the solvent of a supersaturated solution

What happens to the solute if you heat up a supersaturated solution? Since a supersaturated solution is already more than saturated with solute and unstable, my theory is that as you heat the ...
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25 views

Water solubility comparison of stereoisomers of bicyclo [4.4.0] decane-3,4-diol

I think, (I) must be more soluble in water. It is due to trans configuration and thus, forming more effectively inter-molecular hydrogen bonds with water molecules.
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What is the physical explanation driving current flow in a concentration cell?

In a galvanic cell, current is driven because the species at the cathode is reduced by grabbing some electrons from the cathode. The cathode now lacks electrons so it pulls them from the anode. Now ...
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Solubility of ortho- and para-nitrophenol in benzene

Which one between o-nitrophenol and p-nitrophenol is more soluble in benzene? And what is the reason? If the solvent had been polar, hydrogen bonding would have provided a lot of explanation, but what ...
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55 views

Alkoxide metathesis

I am attempting a synthesis for acetylacetone. The preparation I wish to carry out is described on orgsynth by condensation of acetone and ethyl acetate with a base catalyst. The problem for me is ...
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What acids, solvents is lithium-6 fluoride soluble in (other than HF)?

$\ce{LiF}$ is quite insoluble in water, and I'm trying to use some water-soluble acid or solvent to dissolve $\ce{^6LiF}$ (95% enriched) in. I'm not a chemistry person, I'm a radiation detection ...
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Amine vs Amide Solubility

I had a question regarding the solubility of amines and amides. I was looking into the solubility of butanamide and n-Butylamine, and it turns out that whilst butylamine is miscible in water, the ...
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63 views

Caustic and Toxicological Determination [closed]

I need to determine whether or not a product that I am importing is "toxic" and or "corrosive" as defined below. But I am a chemistry n00b — that is to say I have virtually zero ...
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106 views

How can magnesium hydroxide be a strong base and be sparingly soluble at the same time?

A strong base means it completely dissociates forming $ OH^- $ ions when added to aqueous solution. Sparingly soluble means it dissolves very little when added to aqueous solution. Yet magnesium ...
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The Solubility of Tyrosine

I find very little data on the solubility of tyrosine, other than that it has a very low solubility at room temperature for an AA. (1) Does anyone know different ways to dissolve fair amounts of it in ...
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Purification of Glycine

I have a few Kg of Glycine with ~ 10ppm Heavy Metals, I'm wondering how I could conveniently purify all of it down to say < 1ppm Heavy Metals. What would be the most efficient and convenient way to ...
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Free Energy vs. Common Ion Effect in Ultrapurification

I'm wondering which of the two phenomenae grows in importance and which one becomes irrelevant when the proportion of impurities in a product being purified become increasingly small: The common ion ...
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56 views

Why can’t I use solubility product for normally soluble compounds?

Solubility product only applies to sparing soluble ionic compounds (chemguide) I read this in a website. But I don’t see what this should be the case. Taking $\ce{NaCl}$ for example, there’s an ...
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76 views

Why does barium sulphate not dissolve in HCl while barium sulphite does?

Intuition tells me that the ionic bond in the sulphate must be stronger than that in the sulphite. Is this true? If it is then why? The charge on the barium ion is 2+ in both cases and the charge on ...
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Why does p-nitrophenol give sodium bicarbonate test, but o-nitrophenol does not?

Both ortho- and para-nitrophenol are less acidic than carbonic acid. But still paranitrophenol reacts with sodium bicarbonate to give carbonic acid and sodium paranitrophenoxide. However, this is not ...
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Does K2CO3 react in minute amounts with glassware at higher temperatures?

At a temperature of $\pu{750 ^\circ C}$, $\ce{K2CO3}$ and $\ce{SiO2}$ react with each other in substantial proportions, forming $\ce{K2SiO3}$ and $\ce{CO2}$ in the process$\ce{^{[1]}}$. We all know as ...
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81 views

How to predict which complex is formed and which are soluble?

How does one come to know (in this table) which metal cations form ammonia complexes and which ones form hydroxy complexes on reaction with $\ce{NH4OH}$ Reference: J.D Lee - Concise Inorganic ...
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What limits supersaturation in the absence of nucleation sites? [closed]

Imagine a scenario where we have a chamber with air that is supersaturated with water vapour. In this ideal scenario there are no nucleation sites (e.g no suspended particles or nucleation on the ...
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The most convenient process to purify Oxalic Acid up to a high level of purity

I am set out to purify a batch of commercial oxalic acid with the aim in mind to end up with a highly pure product (starting from $\pu{4,000 ppm}$ total impurities and doing so with basic lab ...
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Why is the water solubility of CO worse than that of CO2?

I tried my best to ask SciFinder, Google, and Google Scholar the wrong questions ... I found many paper on the fitting of the solubility to some equations to be able to calculate the amount of $\ce{CO}...
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Why does solubility of Carbonate salts of Alkali metals in water increase down the group?

Carbonate salts have a very large anion so hydration energy should dominate over lattice energy. Since hydration energy is inversely proportional to radius of ion, I would expect Lithium to release ...
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54 views

Using solubility product to determine the mass of the precipitate of a reaction

I mix together $\pu{100 mL}$ of an aqueous $\ce{NaCl}$ solution at $\pu{0.5 M}$ and $\pu{100 mL}$ of an aqueous $\ce{AgNO3}$ solution at $\pu{0.3 M}$. Assuming that the solubility of $\ce{NaCl}$ in ...
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Solubility of Organic Compound confusion

My teacher wrote the following on the board today: A solute will only dissolve if the energy required to break the bonds in the solute and solvent is less than the energy released from the ...
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Does CO2 dissolve in water?

First of all not a homework question, but one day it suddenly popped into my head while opening a bottle of soda and accidentally leaving a glass out for a while. I get that $\ce{CO2}$ in water is not ...
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Chemical that will dissolve the oils left over from broken down coffee grounds?

When coffee grounds breakdown in pipes there is a black sludge residue as a result. Is there a chemical that would dissolve this residue?
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How to calculate mass of calcium fluoride that will dissolve in sodium fluoride solution?

The solubility product of calcium fluoride, $\ce{CaF2},$ is $\pu{1.46E-10 mol^3 dm^{-9}.}$ What mass of calcium fluoride will dissolve in $\pu{500 cm^3}$ of $\pu{0.10 mol dm^{-3}}$ sodium fluoride ...
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67 views

Qualitative Analysis- Distinguishing between two ions or two salts [duplicate]

I know my question is going to be quite below the level of this site but I am 1st grade in university and I can't understand anything. I am going to give an example from the book: distinguish ...
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Contradictory Properties of Mercuric Cyanide [closed]

It is said that mercuric cyanide [$\ce{Hg(CN)_2}$] is water soluble and also is a non-electrolyte. How is this possible?
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60 views

Problem with the solubility and Ksp of zinc hydroxide [closed]

My book gave me that solubility (g/L) is $4.2\times 10^{-4}$, so solubility (mol/L) is $4.2\times10^{-6}$. Then, using the chemical formula $\ce{Zn(OH)2}$, I know that the solubility product is $K_\...
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Cross checking the fact that gas solubility decreases with temperature increase and Henry's law's validity

It is known that the solubility of gas decreases with increase in temperature which is due to the kinetic energy freeing the solute particles into the vapor phase. Henry's law states that the partial ...
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73 views

Why is the solubility of calcium sulfate so low even though it is a salt? [duplicate]

What is the reason the solubility of calcium sulfate in water is so low? Compared to other salts like potassium sulfate (110 g/L) or calcium nitrate (1470 g/L) the solubility of calcium sulfate seems ...
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19 views

Why does pouring carbonated beverages onto fruit cause them to fizz? [closed]

I have noticed that making mimosas, the champagne fizzes more than just pouring it into a flute. Likewise, pouring beer onto citrus fruit or strawberries fizzes a lot. My theory is that the pH drop ...
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Variations in solubility of total dissolved salts in water with temperature [closed]

I want to know the solubility of "total dissolved salts" or mainly Calcium Chloride and Magnesium Chloride causing hardness of water. Is this data published anywhere at different temperatures?
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Why does the amount of CO2 produced decrease with more baking soda?

I'm in chemistry class and we have an assignment and they gave us a video and I took down the data they gave us. They fist measured out 10mL of vinegar for each trial and used different amounts of ...
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218 views

How is Raoult's law a special case of Henry's law and not vice versa?

I know that Raoult's law can be a special case of Henry's law when the value of the Henry's constant becomes equal to the vapour pressure of the pure state of the liquid. Why can't we say the opposite,...
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Why is a gas less soluble in an aqueous solution of electrolytes than pure water? [closed]

Please help me out! This was given as a fact in my textbook but I don't understand the logic behind it.
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Two salts in mutual saturation, which one will precipitate first? [closed]

Let's say I have a satuated solution of two salts with a common ion e.g. KCl and KI, and they're at mutual saturation (let's say there are 75% by weight KCl/ 25% KI). If I slowly evaporate some water, ...
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5answers
109 views

What are practical examples of simultaneous measuring of quantities?

I am a maths teacher and I'm looking for practical examples of measuring quantities simultaneously, so that mathematically one needs to construct and solve a system of equations. I thought that in the ...
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2answers
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How can I dissolve a precipitate when stuck to the side of a boiling flask

I’ve been experimenting with producing Iron Acetates and I’ve run into a snag. Here’s my process so far: I started by adding white vinegar and ~50% Hydrogen Peroxide to a reaction vessel with steel ...
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Why is the boiling point of homologous primary > secondary > tertiary alcohols whilst their solubility in water is the reverse?

From my understanding, for homologous alcohols, primary alcohols have the highest boiling points, because the OH group is the most accessible for other molecules to hydrogen bond to, therefore ...
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Reactions of Depressants

In the froth flotation process, the concentration of a sulphide ore takes place using $\ce{NaCN/KCN}$ as a depressant. It forms a soluble complex with the impurity sulphide. Taking the particular ...
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The equation representing the dissolution of cycasin [closed]

Is the following equation correct? $$\ce{{C_8H_{16}N_2O_7}_{(s)} + H2O_{(l)} <=> {C_8H_{16}N_2O_7}_{(aq)}}$$
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Did I accidentally create phosgene gas [closed]

I accidentally mixed bleach and acetone trying to remove hair dye stains from my shower wall. The mixture turned orange when the bleach and acetone touched. Could I have created phosgene gas ...
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Concerning Solubility Product Equations and Phases? [closed]

NaOH(?) <---> $Na^+$(aq) + $OH^-$(aq) What is the phase of the NaOH, I originally thought it was Aqueous due to it being readily soluble in water but I also heard that it was common practice to ...

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