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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51 views

Predicting products of a reaction and balancing [closed]

2BiOCl + NaOH = BiOH + NaCl. This is the reaction where I am trying to get Bismuth Hydroxide as one product and salt. My problem is what is the state of Bismuth Hydroxide? Whether it is BiOH or Bi (OH)...
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Would boiling distilled water in a kettle full of limescale increase the hardness of the water?

If I had a kettle which had limescale on it (due to several episodes of boiling hard water), and I would use it to boil distilled water, would that mean that some of the precipate dissolve into the ...
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834 views

Polar compounds that doesn't dissolve in water? [closed]

I'm studying for my exam introduction to chemistry. In the course, there's an exercise where we have to explain why something dissolves in water and why other compounds doesn't. For me, if the ...
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325 views

The effect of HCL concentration on the Solubility of Hydroxyapatite [closed]

Recently I conducted an experiment to investigate the effect of HCL concentration on the solubility of hydroxyapatite [Ca5(PO4)3(OH)]. This was done by taking a sample of the solution after ...
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68 views

Does Henry's law depend on curvature of gas/liquid interface?

Could you tell me Henry's law depends on curvature of gas/liquid interface or not? It would be better with references.
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Why don't soluble gases that evolve in a reaction remain in solution?

Take for instance the following process: $$\text{2NaCl}_{\ (s)} + \text{H}_2\text{SO}_{4 \ (aq)} \to \text{2HCL}_{\ (g)} + \text{Na}_2\text{SO}_{4 \ (aq)} $$ Why does the evolved gas leave the ...
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28 views

Is every compound that has a H-bond donating group soluble in water? [closed]

I am wondering if there is any general rule of thumb
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2k views

Explain the effect of intramolecular hydrogen bonding on solubilities in cold and hot water?

There is a statement given in my textbook (Cengage, Organic Chemistry (Part 1), page 4.33) which is as follows: (I edited the statement to make it simpler) One can account for the solubilities of ...
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478 views

Why is propanediol soluble in water?

I'm a crafter who likes to make her own body oils and butters but I have no background in chemistry. Now, I just read something about propanediol (which I'm considering for modifying the feel of my ...
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3answers
272 views

If all intermolecular forces are electrostatic in nature, why don’t large non polar molecule dissolve in water?

If I have a large non-polar substance A that forms strong dipole-induced dipole force (DIDF) with water, with strength comparable to that of H-bonds between water molecules, will A dissolve in water?
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834 views

Two ways to calculate dissolved oxygen

To calculate the dissolved oxygen in water at saturation pressure at 25 °C, we do: $$ D_\ce{O2} = K_\mathrm{H} \times M \times p_\mathrm{g} $$ $$ D_\ce{O2}~[\pu{g/L}]= 1.26\times10^{-3}~[\pu{mol/L/...
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The effect of pH and solubility on coagulation in water treatment

In water treatment, a specific pH range must be met in order for the process of coagulation to occur properly. Sources have stated this is due to the pH affecting the solubility of the coagulant, but ...
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132 views

Dependence of mass transfer coefficient on solubility

Does solubility of the solute affect the value of the mass transfer coefficient? The book I am following mentions that the mass transfer coefficient is a characteristic of the constituent and its ...
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1k views

Dissolving of non polar gases in water (liquid)

How does dissolving happen for non polar gases in water? Is it like being in the space between the water molecules or does there occur some kind of interaction occur between gas molecules and water ...
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1answer
353 views

Why do my equilibrium calculations on this HF/NH4OH buffer system not match those in literature?

I've been trying to reproduce Figure 2 from this research paper (full text available). The Problem However I can't seem to get the same values as in the paper. I did the math both by hand and with ...
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124 views

What is the solublity of water in liquid carbon dioxide at low temperature?

The solubility of water in liquid carbon dioxide has been investigated by Hosmer W. Stone in 1943 from -29 to about 22 °C. Is there any research done on the solubility of water in liquid $\ce{CO2}$ ...
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337 views

Reacting NaOH in solution with O3

I use common air to produce ozone. However the gas after the ozone generator does contain $\ce{NO2}$ gas, which I have to remove for the subsequent steps. I tried to remove the $\ce{NO2}$ with a ...
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70 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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482 views

How to determine if an unknown is potassium chloride or potassium bromate?

In class, we were given unknown substances. I've narrowed the possible substances down to either potassium chloride or potassium bromate. We were given several acids, indicators, and other chemicals (...
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104 views

Why do we use different arguments for determining the strength of hydracids and solubility of ionic compounds?

HI is a stronger acid than HF. Why? Because when dissolved in water, the bigger iodide ion handles the negative charge way better than the small fluoride ion. So Iodide ion is a weak conjugate base ...
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1answer
90 views

What's the point of solubility products?

What is the advantage of solubility products, e.g. LiF(s) ⇄ Li+(aq) + F-(aq) | K = [Li+(aq)] * [F-(aq)] = 0.00184 M2 at 25°C (source) compared to just stating that Solubility in water = 0.134 g/...
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53 views

effect of overpressure on lowering viscosity of polysaccharide solution

it has been reported that agarose dissolved at 110C under slight over-pressure has a viscosity at least 10X smaller than dissolved at atmospheric pressure at 90C (ref:https://doi.org/10.1016/j....
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101 views

What's the identity of the crystalline solid in the following reaction? [closed]

A mixture of toluene, benzoic acid, aniline and phenol was dissolved in diethyl ether and extracted with 5% $\ce{NaHCO3}$ solution? This extract was acidified until a white crystalline compound ...
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8k views

Which has a greater dominance: hydration enthalpy or lattice energy?

When I was reading my notes I came up with a problem. I read that for the s block element salts, when checking the solubility, we consider the hydration enthalpy so we decide their stability in water. ...
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Why are magnesium chloride and calcium chloride more soluble than sodium chloride?

I read that $\ce{MgCl2}$ and $\ce{CaCl2}$ are more soluble than $\ce{NaCl}$. I think that $\ce{NaCl}$ should be more soluble due to more ionic nature. $\ce{Mg^{2+}}$ and $\ce{Ca^{2+}}$ are more ...
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If i keep adding sulfuric acid into water, will it keep dissolving forever?

If i keep adding sulfuric acid into water, will it keep dissolving forever?
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2k views

Is Biotin water-soluble or fat soluble?

Vitamin $\ce{B_7}$ or Biotin is a member of the vitamin B complex. Members of the vitamin B complex are usually known to be water soluble. However, this webpage mentions that biotin is water soluble. ...
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The Salt Effect stops working in extreme cases?

I and three friends did an experiment where we investigate the salt effect, also known as the uncommon ion effect. The specifics are that we made a $\pu{1L}$ solution saturated with $\ce{CaCO3}$ and $...
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394 views

Why isn't orthoboric acid soluble in cold water even though it has polar B-OH bonds?

This is the information I found regarding orthoboric acid's solubility: Textbook (NCERT India): Sparingly soluble in water (didn't say what temperature - presumably cold) and highly soluble in hot ...
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358 views

Precipitation of CaCl2 and FeCl3 in Na2CO3 [closed]

Why does $\ce{CaCl2}$ gives precipitation of $\ce{CaCO3}$ when $\ce{Na2CO3}$ is added, but $\ce{FeCl3}$ does not give the precipitation of $\ce{Fe2(CO3)3}$ in $\ce{Na_2CO_3}$ ?
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917 views

Can there be two precipitates in a double displacement reaction?

On one of my chemistry homework's, I am doing a double displacement reaction and the question is having me predict the products and make a net ionic equation for copper(|I) sulfate and barium acetate ...
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852 views

Can CaF2 exist in solution (aq) or only as a solid? [closed]

One man says that Calcium Fluoride solution can not exist, because it is only hydrated cations (N+) and anions (F-) surrounded by water molecules and that CaF2 can exist only in solid State,...
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317 views

is syringaldazine soluble in water?

Would it be better to use water or ethanol as a solvent for syringaldazine? Why? Would water interfere with the oxidation of syringaldazine if laccase enzyme was added?
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Why are some smells so hard to get rid of? [closed]

What may seem to be a silly question could actually have roots in some core chemistry principles. The other day, I was cooking fish when I noticed that I'd forgotten to use a fork, and touched the ...
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646 views

Is there a simple way to memorize/reason out the solubility rules?

Normally, to determine if a compound is soluble, I would just apply the solubility rules, which can be found here. The problem is, these are not fun to memorize as there are often loads of exceptions ...
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232 views

What is the stability of Pregnenolone in various mediums? [closed]

I have some pregnenolone powder that I want to dissolve it in to a liquid medium for later human ingestion, some potential medium choices would be: alcohol, fruit juice, water, olive oil. I am trying ...
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Crystallisation problem

I have an aqueous solution of N,N-dimethylphenylalanine methyl ester hydrochloride and I need to crystallise it as a salt. I'm afraid of increasing the temperature or the concentration of acid due to ...
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141 views

Effect of stereoisomerism and racemization on solubility

I was on the Wikipedia page of Tartaric Acid, and I noticed that its solubility in water varies depending on whether the solution is racemic, meso, or optically active: $$\begin{array}{|c|c|} \hline &...
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Flaw in my logic on Henry's Law?

It states mathematically $ p=Kx $ where $x$ is mole fraction of dissolved gas and $p$ is partial pressure of the gas. Dissolution of gases is exothermic, so with increase in temperature, solubility $x$...
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269 views

Why do bicarbonates tend to be more soluble in water than carbonates, for Group 1 and Group 2 elements?

In Group 1 and Group 2, it is usually found that bicarbonates tend to be more soluble in water than carbonates. For example: $\ce{NaHCO3}$ has higher solubility than $\ce{Na2CO3}$ As most of the ...
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Can a molecular sieve be used increase the saturation of a fructose solution?

The Problem: Let's say we have an experiment where we are attempting to grow rock candy crystals by letting a solution of sugar crystalize on a wooden dowel. However, an error may have been made in ...
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Will ferric nitrate or nitric acid dissolve polylactic acid?

Will ferric nitrate dissolve 3D printed items? I wish to etch some sterling silver, for which we use either ferric nitrate or nitric acid, and wonder about 3d printing the design straight onto the ...
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384 views

Predicting Ka/Kb values using values for solubility in water

Given that $K_\mathrm{a}$ values are determined by the position of equilibrium for a species such as $\ce{HCl}$ where $K_\mathrm{a} = \ce{\frac{{[H^{+}]}{[Cl^{-}]}}{[HCl]}}$, I was wondering whether ...
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What is the difference between dissolution and absorption?

Let us first look at the definitions from Gold Book: Absorption: The process of one material (absorbate) being retained by another (absorbent); this may be the physical solution of a gas, liquid, ...
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87 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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Why does adding water to a saturated solution increase the number of ions present in the solution?

In my book, it is stated that when some water is added to a test tube having a saturated $\ce{Ag2SO4}$ solution, with its solid at equilibrium, the number of $\ce{Ag}$ ions in the solution increases. ...
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Is is possible to Generate ~1ppm Copper in Solution from Elemental Copper? [closed]

I am designing a hydroponic system and need to control algae. Copper is a known algaecide and lettuce actually needs some copper to grow well. I had read stories about people using copper pennies in ...
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372 views

How does recrystallization work to purify if compounds have equal solubilities, but one is present in a greater quantity?

Every article or text I've read on crystallization states that it works by taking advantage primarily of differences in solubilities, but I've also been told that it can purify compounds with ...
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645 views

Solubility equilibrium [closed]

This is a worked example about solubility equilbrium I am new to this subject and I am really confused first of all I know that Q is the product of concentration of Ag and Cl in the solution and ksp ...
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Why is this scintillator component turning into a milky-white emulsion?

I am a chemistry and physics double major doing some chemistry work in a nuclear physics lab. My mentor is a physicist, so his area of expertise is occasionally mismatched with what I need for my ...