Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

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].

0
votes
0answers
8 views

Difference of Ascorbic acid dissolved or precipitated in Glycerol?

Difference of Ascorbic acid dissolved or precipitated in Glycerol? Referring to pat US20110008445A1 This resolves to: Solution 1 At 25C, ascorbic acid was dissolved in glycerol and alcohol (...
1
vote
0answers
20 views

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 ...
-1
votes
0answers
5 views

Find the density of a solution. also converting solubility of solution (g/kg) to solubility (g/l)

Q: Find the density of a solution,whilst converting solubility of solution (g/kg) to solubility (g/l) only having the density of the solute in its solid form is 1.35 g/cm3. I am currently designing a ...
-2
votes
1answer
45 views

Why is Barium Phosphate soluble in dil HCl? [on hold]

Why is Barium Phosphate soluble in dil HCl While Barium Sulphate is not?
0
votes
0answers
19 views
4
votes
0answers
41 views

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) <=...
0
votes
0answers
10 views

Solutions and solubility [closed]

If 250.0 mL of a stock solution of 0.300 mol/L Fe(NO3)3 is availabl,e and the chem teacher needs 1.50 L of a 0.025 mol/L, how much of the stock solution should she dilute down?
0
votes
0answers
35 views

Any reasons why experimental values of solubility could be much lower than literature values?

I have some graphs of solubility product over temperature, and my trends are perfectly fine. I have a perfectly nice curve. The only problem is that the whole graph is way lower than it should be (and ...
2
votes
0answers
23 views

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 ...
4
votes
3answers
90 views

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{...
1
vote
2answers
21 views

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 ...
4
votes
2answers
136 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 ...
0
votes
0answers
38 views

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%...
-1
votes
0answers
55 views

Why does lead chloride not precipitate from a lead chlorate solution with KCl?

$$\ce{Pb(ClO_4)_2(aq) +2KCl(aq) -> PbCl_2(s) + 2KClO_4}$$ A chemist mixes a dilute solution of lead perchlorate with a dilute solution of potassium chloride to precipitate lead(II) chloride ($K_\...
4
votes
2answers
179 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?
1
vote
0answers
23 views

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 ...
2
votes
0answers
23 views

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 ...
-1
votes
2answers
34 views

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?
-1
votes
1answer
47 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 ...
2
votes
2answers
57 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 ...
2
votes
1answer
49 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 ...
3
votes
2answers
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? ...
0
votes
0answers
40 views

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 ...
0
votes
0answers
13 views

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.
0
votes
1answer
46 views

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 ...
-1
votes
1answer
36 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?
2
votes
0answers
45 views

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 $...
2
votes
1answer
34 views

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 ...
0
votes
0answers
33 views

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, $$...
0
votes
1answer
48 views

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 ...
1
vote
1answer
39 views

Can buffer solutions be used to control the pH of ethanol?

For my experiment, I want to investigate the effect of differing pH on the solubilities of a sparingly soluble drug. However, the solubility is too low for me to conduct a reliable study on the ...
2
votes
1answer
103 views

How to dissolve beeswax on the underside of a porous wood structure

Honeybees, like most insects, communicate through smell. They are attracted to the smell of beeswax. My profession is to rescue and relocate honeybees that have taken up residence inside walls, attics ...
-1
votes
1answer
56 views

Why does a weak base, which is also a salt, dissociate completely in water? [closed]

I'm answering a problem where $\ce{KOH}$ and $\ce{KOAc}$ dissociate nearly as much as each other in separate aqueous solutions at equal concentrations. The problem essentially assumed both completely ...
-1
votes
1answer
29 views

How can I reduce sodium chloride levels in water, without removing other minerals?

How can I reduce sodium chloride levels in water, without removing other minerals? Good day, I make a sole from Himalayan Salt which I add to my Reverse Osmosis treated water to ensure my body isn't ...
1
vote
2answers
133 views

What is the best way to calculate the mass percentage of Calcium Carbonate from water?

Where I live it's believed that local tap water is really bad for drinking because of the amount of limestone. As a science experiment for school I wanted to approximately calculate the percentage of ...
0
votes
2answers
129 views

Does propylene glycol dissolve plastic?

According to Médecins Sans Frontières propylene glycol can dissolve plastic: As propylene glycol can dissolve plastic... (Source). Is this claim true? This seems rather spurious to me. If it ...
1
vote
1answer
27 views

Should I include ions from the solvent in solubility product constant calculations?

I'm trying to determine the Solubility Constant $K_\mathrm{sp}$ of $\ce{Ba(NO3)2}$ dissolved in nitric acid solution $\ce{HNO3}$ from experimental data. $\ce{HNO3}$ will be mostly dissociated so ...
-1
votes
1answer
46 views

Why does water expands when we add salt to it? [closed]

When we add salt to water the volume of the water expands. Why is that
6
votes
1answer
2k views

Can I boil off chlorine? Does it evaporate quickly at high temperatures?

Can I boil off chlorine? Does it evaporate quickly at high temperatures? I am asking because I want to remove it from drinking water, and I don't want to wait 24 hours for it to evaporate naturally.
2
votes
1answer
44 views

How dependent is the molal depression constant on the nature of solute?

I've been reading about the molal depression constant (freezing point depression constant) for binary solutions in class. I encountered a problem (see below) in which the constant $K_f$ was to be ...
0
votes
1answer
64 views

Is NaCl the only precipitate when you add HCl to concentrated NaCl [closed]

When aqueous HCl is added to a saturated salt water solution, is NaCl the only precipitate or does some HCl crystalize as well? Sources online say that NaCl crystallizes but they don't say what ...
0
votes
0answers
19 views

Effect of temperature on concentration of ammonia in trichloromethane

By reviewing some literature on the distribution of ammonia in water and trichloromethane, I've found that increasing temperature decreases the partition coefficient of ammonia given that the formula ...
2
votes
1answer
51 views

How to take a sample of a hot salt solution without it precipitating in the cooler glassware due to the difference in solubilities at different temps?

I'm doing an investigation to see the effect of temperature on the solubility product of strontium hydroxide. I made a supersaturated solution left in the oven overnight at 85°C for equilibrium to be ...
2
votes
1answer
53 views

Techniques to extract lipids

I am planning an experiment on how to isolate casein and part of the process involves removing any lipids that may still be in it after filtering the precipitated casein out of the milk. I have read ...
24
votes
2answers
2k views

Is honey really a supersaturated solution? Does heating to un-crystalize redissolve it or melt it?

In the SciShow video Honey: Bacteria's Worst Enemy after about 00:30 the narrator says: Honey is only about 17% water. Most, but not all of what remains is sugar....
0
votes
0answers
20 views

Is the analyte included in the ionic strength equation?

I don't quite understand the calculation for ionic strength of a solution. The formula includes the concentration and charges of the ions in solution, however, is the analyte (whatever we're trying to ...
1
vote
1answer
21 views

Hardened polyurethane remover

I've looked at the MSDS of a couple of products for removing hardened polyurethane (PU) foam. Both contained only ethanolamine as a dangerous substance, but only between 1-5%. So I'm guessing this ...
4
votes
2answers
71 views

Determination of solubility equilibrium using galvanic cell reactions

This is the problem: We can determine the solubility equilibrium for silver bromide using cell: Ag (s) | AgNO3 (aq) || KBr (aq) | AgBr (s) | Ag (s) We know that: $\text{AgBr} + \text{e}^- \...
-2
votes
1answer
149 views

Q. 36 2018 molar solubility of CaF2 at pH3 given molar solubility at pH7 and pKa of HF [closed]

This is Q36 on the 2018 Chemistry Olympiad: Calcium fluoride, $\ce{CaF2}$, has a molar solubility of $\pu{2.1e–4 mol L–1}$ at pH = 7.00. By what factor does its molar solubility increase in a ...
1
vote
0answers
33 views

how can I predict the rate of water ions precipitation on a surface?

Consider a titanium pot that contains 1kg water with the following ions: $[Ca^{2+}]=22000$ ppm, $[Mg^{2+}]=1500$ ppm,$[Sr^{2+}]=791$ ppm,$[Na^{1+}]=48000$ ppm,$[Cl^{1-}]=120000$ ppm,$[SO_4^{2-}]=...