I am a bit confused re. solubility calculations.
Calculate the solubility of Pb(OH)2 at pH 10. Setting up the expression for Ksp:
Ksp = [Pb2+][OH-]2 = 8* 10^-17 (Ksp value from SI chemical data)
pOH = 14 - 10 = 4, i.e. [OH-] = 10-4.
8*10-17 = [Pb2+][OH-]2. Solving for [Pb2+] we get...
How many of the following would you NOT expect to be more soluble in acid than in pure water?
FeS, CuCN, AlPO4, BaCO3, AgCl
The Attempt at a Solution
So we know that anything with OH- or anything that has the conjugate base of a weak acid...
What are the differences between carbon dioxide solubility (miscibility, reaction) in liquid water when in gaseous (<38 bar) and liquid (>38 bar) phase? The temperature in my experiments is usually between 0 and 5°C. The stirring speed is around 500 rpm.
Is the solubility given apart from...
20g of saturated solution of potassium nitrate is cooled from 68 to 36 degree Celsius
What is the mass of potassium nitrate which crystallizes?
Potassium nitrate solubility per 100g of water
68 degree Celsius = 120g
38 degree Celsius = 60g
I tried without...
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 I am not sure where the people answering this question have gotten the information that calcium...
Knowing Ks=6⋅10−38 for Fe(OH)3 in neutral solutions, calculate the minimum pH of an acidic solution in order to completely dissolve 10 mg of Fe(OH)3. Data: Volume = 0.1 L.
I set out the equation for the equilibrium constant. having first calculated the concentration or iron ions (9.35899*10-4...
I have searched to find out how the solubility of Ammonia changes with pressure, but haven't been able to find out. Though data about solubility change with temperature is available. One have told me that solubility of Ammonia varies little with pressure. But, I want to be assured about that...
I conducted a titration experiment in which 0.1g of KHP was dissolved in 50mL of distilled water and placed in an Erlenmeyer flask. I filtered a Ca(OH)2 solution (that was left out open on the lab benches for us to use) and put that into the burette and titrated. Ultimately...
So we did a lab in organic chemistry where we did a resolution experiment for enantiomers and in the separatory funnel we had sodium tartrate/tartaric acid left in the aqueous phase of the funnel. It asks why this compound is more soluble in high ph solutions as compared to...
Say I have an ion XY. I dissolve it in a solution.
What is the difference between its dissociation or solubility, or are they the same? Seems my ap chem review book is using these two terms interchangeably and I am just plain confused. Thanks
Do you have any suggestion for a good solubility database? I tried IUPAC-NIST but I can't find the data I need there (water-toluene, water-hexane, water-MEK mixtures at 40°C). I am also looking for the densities of the pure solvents at 40°C.
I just had an extraction lab, and am confused how methyl red is soluble in both water and ether.
My prediction was that methyl red would be only soluble in ether, but it actually dissolved into both layers. Looking at it's structure, it has a carboxylic group on one end, attached to a chain...
Hello fellow scientists.I am currently doing a project that requires me to make a stock solution of titanium dioxide which i will use to make different concentrations and measure absorbance and then plot a calibration curve which will be used to determine the concentration of Ti02 in an unknown...
I am having trouble understanding how a substance only slightly soluble in water is considered as a strong base. Isn't the definition of a base a substance that will increase the amount of OH- in a solution? In that case, shouldn't calcium hydroxide be considered a weak base because of its...
The fluoride which is most soluble in water is:
The Attempt at a Solution
the answer given is D.
but BeF2 is covalent in nature and is soluble in organic solvents.
Due to more electropositivity of Ba, BaF2 will have more...
I came across this in a thread on Na & K carbonates
"Basically, just remember, L S, B C L, S P A
All potassium,nitrate salts are soluble.. however, chlorides,carbonates and sulphates are an exception.For chlorides, all chlorides are soluble except lead chloride and silver chloride..all...
An aqueous effluent contains 12 M Cd2+ and 10 M Mg2+ as solution of nitrates. Current practice is use NaOH to selectively precipitate the metals.
(a) Is it feasible to get 0 Cd impurities in Mg ppt by using NaF instead of NaOH (back up your answer with adequate calculations)...
A colorless solution is known to contain one of these
ions. Which ion is present if adding dilute HCl produces
a white precipitate that dissolves when the solution is
The Attempt at a Solution
I know it...
I'm writing a research plan for a college lab and I need the solubility of Ammonium Gas in Dimethyl Sulfoxide at STP and RTP. I've been searching internet and I haven't found anything. Please let me know the solubility or where I can find this information. Any help is greatly...
I know aqueous Ammonium Bicarbonate forms when NH4+ and HCO3- ions are present in water after they've dissolved from their gaseous states of NH3(g) and CO2(g). This occurs in the reaction:
NH3(g) + H2O(l) + CO2(g) => (NH4)HCO3(aq)
If Ammonia gas and CO2 are present above a polar organic...
Ok so I think I have a suitable answer to my question but because of certain circumstances I have reason to believe my answer is wrong.
The question is: calculate the amount of phosphoric acid in mgH3PO4/L in a solution of concentration 2.92X10^-5 mol/L.
seems pretty straight forward but...
Hi Physics Forums,
The solubility of a gas according to Henry's Law depends on partial pressure. Would an increase in pressure in a system increase the solubility of a specific gas, even if the partial pressure of that particular gas doesn't change?
The system described above increases in...