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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Looking for chemical tracer/indicator to track position in snow
I'm trying find a way to mark the position of a snow layer to find it later in the season. We've tried a lot of different methods, but anything that changes the color/permeability of the snow surface ...
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1answer
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Contradictions in acidity and solubility of phenol derivatives
o-Nitrophenol is less acidic in comparison to p-nitrophenol due to intramolecular hydrogen bonding. This effect also is the reason for o-nitrophenol being less soluble in water.
At the same time, ...
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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 refrigeration....
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What is the difference between the nu cervical value of solubility and the plain solublility? [closed]
I am in a dilemma after solving these two questions. The first asks for the mass, but regardless gives the solubility value in the answer as a result of equating the solubility to 4x^3 as shown. This, ...
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111 views
Can ionic compounds dissolved in organic solvent conduct electricity?
Ionic compounds dissolved in water, as an aqueous solution, can conduct electricity.
Can they conduct electricity if they are dissolved in organic solvent?
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Will NaF + CaCO3 precipitate much CaF2?
If I mix sodium fluoride, calcium carbonate powder, and water, under what conditions (if any) would there be an equilibrium?
I.e. assume we start out with fully dissociated $\ce{Na+(aq) + F-(aq)}$, ...
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1answer
28 views
Is there a name, or any specific jargon for a precipitation equilibrium involving a solid reactant?
Let's say you have some ions in solution, for example Na+(aq) and OH-(aq), and some partially dissolved solid, MgCO3(s), Mg+2(aq) and CO3-2(aq), which precipitates Mg(OH)2(s) until equilibrium.
So ...
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What exactly is going on in this reaction: sodium bicarbonate (supersaturated aqueous), isopropyl alcohol, and acetic acid (vinegar)?
I had observed this reaction by playing around with vinegar and baking soda and do not completely understand it.
Everyone knows that baking soda and vinegar goes crazy and starts creating carbonic ...
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Does brewing tea with hard water reduce the amount of bioavailable fluorine?
I read that brewed tea contains a relatively large concentration of Fluorine.
Fluorine can have negative health effects such as Skeletal Fluorosis. EDIT: I understand some Fluorine is necessary and ...
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51 views
Polymers which are miscible in oil
Can someone suggest me a list of polymers or some paper where I may find polymers that are soluble in oils like silicon oil, mustard oil, coconut oil, bean oil or petroleum ether, etc.?
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Can the solubility of a compound be used to estimate the degree of separation of a solute from a solution?
I'm confused exactly on how to use the concept of solubility to get the amount of separation from a certain solute in the solution.
This arises from attempting to solve a problem regarding this ...
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163 views
Why zinc sulphate solubility is higher in ethylene glycol than water?
I'm trying to find saturation point for dissolved zinc sulphate in water and ethylene glycol.
Based on my knowledge, water is more polar than ethylene glycol as reflected in its higher dielectric ...
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776 views
Understanding the solubility of Ca(HCO3)2
According to wikipedia Ca(HCO3)2 has the following solubility values:
16.1 g/100 mL (0 °C)
16.6 g/100 mL (20 °C)
18.4 g/100 mL (100 °C)
So I assume Ca(HCO3)2 would precipitate beyond this level. ...
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63 views
What is the relation between solubility and thermal stability? [closed]
The thermal stability of alkaline earth metals increases down the group for hydroxides i-e., Be(OH)2 is less stable than Ba(OH)2.
The solubility also increases down the group for these compounds i-e., ...
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Calculating equilibrium concentrations of silver and halide ions
$\pu{500 ml}$ of $\pu{0.01 M}$ $\ce{AgNO3}$ is mixed with $\pu{500 ml}$ of solution containing $\pu{0.1 M}$ $\ce{NaCl}$ and $\pu{0.1 M}$ $\ce{NaBr}$. $K_\mathrm{sp}$ of $\ce{AgCl}$ is $10^{-10}$ and $...
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How does ammonium chloride increase the solubility of magnesium hydroxide in water?
In my textbook it is written that $\ce{Mg(OH)2}$ is slightly soluble in water, and it forms a milky solution which is called "milk of magnesia".
Its solubility can be increased by the addition of $\...
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1answer
46 views
Do all nitrides(metal nitrides,non metal nitrides) react with water? [closed]
It is observed if we put magnesium nitride in water it will react and produce ammonia gas and magnesium hydroxide solution, do all nitrides behave this way? Is there a trend?
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Comparison between solubility of amines and alcohol [duplicate]
Why are alcohols more water soluble than amines for similar molecular weight.
I know this is a duplicate question . The reason i posted it again was that on the original question i posted my answer ...
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1answer
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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
82 views
Why is Pyridinium Chlorochromate soluble in organic solvents?
I would presume that Pyridinium Chlorochromate is not organic soluble due to the relatively strong ionic bonding between the anion and cation on account of their similarly large size. Although the ...
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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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Liquids which may dissolve poly(acrylic acid)?
I want a liquid that may dissolve poly(acrylic acid) and is immiscible with water at the same time!
Note: When kept with water, the above solution must not let poly(acrylic acid) go/seep into the ...
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Finding the concentration of each ion in saturated solution of lead(II) hydroxide
Question
If the solubility of $\ce{Pb(OH)2}$ is $\pu{0.155 g/L},$ then the concentration of each ion in a saturated solution of $\ce{Pb(OH)2}$ is
A. $[\ce{Pb^2+}] = \pu{0.155 g/L}$ and $[\ce{...
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574 views
What is the logic behind the division into groups of anions and cations in qualitative inorganic analysis? [closed]
I find it very confusing and hard to memorize.
Is there a way to deduce it, like understanding how it is derived, or is it just one of a lot of ways you can do it but is the standard one?
Do people ...
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71 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
37 views
How to calculate the amount of sodium sulfate needed to lower the silver ion concentration of a saturated silver sulfate solution?
How many moles of $\ce{Na2SO4}$ we have to add into a saturated $\pu{0.5 L}$ solution of $\ce{Ag2SO4}$ so that the concentration of $\ce{Ag}$ is $\pu{4.0 \times 10^-3 M}$? ($K_\mathrm{sp} = 1.4 \times ...
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1answer
6k views
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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33 views
Why are alkali metal compounds like sodium hydride or sodium amide strong bases but weak nucleophiles?
I understand why compounds such as $\ce{NaH}$ or $\ce{NaNH2}$ are weak nucleophiles: as they aren't very soluble in organic solvents, they react only on the clusters' surface. But why are they strong ...
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1answer
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Methods to increase the speed of dissolving potassium sulfate in water apart from heating, grinding or shaking
I bought potassium sulfate to be used as a fertilizer. The fertilizer comes in the form of small pebbles 1-2mm in diameter. Wikipedia states that the solubility is around 111g/liter at 20°C.
I ...
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What formula allows adjusting balance of (Ethyl Alcohol / Water / Caffeine powder) to know concentration for the Caffeine solution?
I am experimenting with different levels of concentrated caffeine solution. The solution has a small percentage of ethyl alcohol, in the $\ce{H2O}$.
Problems encountered too much ethyl alcohol ...
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1answer
39 views
Why is CO2 more likely to dissolve in a basic solution than an acidic solution? [closed]
I'm having trouble thinking through this problem. I know that when $\ce{CO2}$ dissolves in water it can release $\ce{HCO3-}$ and $\ce{H+}$ and cause a drop in pH. But can I use this to justify why $\...
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1answer
88 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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Can anyone please explain the statement on solubility and precipitation [closed]
"It is because of high solubility product of Mg(OH)2 as compared to that of MgCO3 that Mg(OH)2 is precipitated." Can anyone please explain the statement.
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Is it possible to put wax or PE or any kind of insoluble coating on soluble material (e.g. edible film)? [closed]
I'm working on a project to make a cup that can holds hot/cold water inside but can be dissolved from the outside. I'm just wondering if that would be possible scientifically??
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How to dissolve chalk (CaCO3)?
I've read that vinegar can dissolve $\ce{CaCO3}$, I know that extreme heat can decompose it, but how to dissolve $\ce{CaCO3}$ at home? I need to dissolve chalk in my home because of repairing ...
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466 views
Why is Diiron nonacarbonyl so exceptional?
My textbook(NCERT) says:
With exception of $\ce{Fe2(CO)9}$, all other metal carbonyls are soluble in hydrocarbon solvents.
Weller, M.; Overton, T.; Rourke, J.; Armstrong, F. Inorganic Chemistry, ...
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1answer
54 views
Solubility of Lead in water from leaded pipes in Roman aqueducts
Lead can undergo the following reactions when cold and hard water passes over it:
$$\ce{Pb^2+ + 2Cl- -> PbCl2}$$
$$\ce{Pb^2+ + SO4- -> PbSO4}$$
All these salts are sparingly soluble in water ...
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Can compounds dissolved in different miscible solvents react?
For example, can crystal iodine dissolved in ethanol react with sodium thiosulfate dissolved in water when mixed together?
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How to calculate the solubility product for PbS from galvanic potential?
Knowing that at 25 °C the following galvanic cell:
$$\ce{Pb~|~Pb(NO_3)_2~1M~||~PbS~saturated~|~Pb}$$ shows an $\mathrm{EMF} =0.413~\mathrm{V}$, find the $K_\mathrm{sp}$ of $\ce{PbS}$.
My Approach
...
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1answer
658 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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1answer
47 views
Calculating the Ionic strength of sodium acetylsalicylate
With the addition of aqueous NaOH to an aspirin solutions in water the reaction will yield products of sodium acetylsalicylate and water. I would like to measure the amount of sodium apsirin formed ...
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1answer
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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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Mixing solvents, or how does paint thinner work?
I would like to understand how a mixture of solvents works together.
For example, there are two solvents combined, and each one alone can dissolve some material, but one acts faster.
How do they ...
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1answer
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Medroxyprogesterone [closed]
Hi, I have a question regarding my university assignment. In this case; it’s medroxyprogesterone. We all know that it’s a hydrophobic drug, hence, we are assigned to create a sterile injection in ...
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Why is heating increasing the solubility of sodium hydroxide?
\begin{align}
\ce{NaOH &-> Na+ + OH-} & \Delta H^\circ &= \pu{-44.51 kJ/mol}
\end{align}
The dissolution of sodium hydroxide in water is an exothermic process, and so, according to Le ...
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Carbon Capture Absorption with Henry's Law
Assume the Henry’s coefficient for water at $\pu{20 °C}$ is $\pu{1.6E8 Pa}.$ What is the mole fraction of $\ce{CO2}$ that will be dissolved in water assuming that it is at equilibrium with a flue gas ...
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1answer
68 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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1answer
178 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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1answer
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Isolating barium(II), copper(II) and zinc(II) from aqueous solution [closed]
Q15 Each metallic ion was separated from an aqueous solution containing $\ce{Ba^2+},$ $\ce{Cu^2+},$ and $\ce{Zn^2+}$ by the procedure shown in the following figure. From ①–⑥ in the table below choose ...
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1answer
356 views
Calcium ion and sulfate did not form precipitate
I was in the chemistry lab earlier this week. We were doing a qualitative experiment (no concentration given for any solution).
I added an unknown solution that contains $\ce{Ba^2+},$ $\ce{Ca^2+},$ ...
