Solubility Definition and 235 Threads

Hey.. Sorry to be so dopey but I'm unable to write a valid hypothesis about the solubility of KNO3 in water as temperature increases... I'm unsure which laws apply and how to write up a decent standard hypothesis.. could you possibly give me a few key terms I could research or write a few...

Homework Statement Calculate the solubility of C6H5COOAg(s) in a buffer solution that has a pH of 3.20. (Ka = 6,5 x10^-5M ; Ksp = 2,5 x10^-5M^2) a) 0,0164M b) 0,0050M c) 0,0287M d) 0,0012M Homework Equations Henderson-Hasselbach, Ksp equation The Attempt at a Solution This is...

Hello, I have synthesized a compound with two quaternary ammonium groups and two cyanide groups. I did the reaction in dmf, and after the reaction I poured the reaction medium onto ice-cold water. A little precipitate formed, but I think this is not the compound I want, my compound is still...

The question asks if Cu2+ is soluble with Cl- or not. I'm looking at my solubility chart and it says Cl- and Cu+ are low solubility. But I am wondering, does it matter if it is Cu+ or Cu2+? Are they both treated the same and therefore low solubile, or is just Cu+ low soluble?

Hi guys, I need some help with this question. What features in the molecular structure of a compound affect its solubility and its melting and boiling points. I need to answer this question with several examples and include structural diagrams. Please help

Proteins Are protein structures always right-handed??

What principle explains the solubility of a substance in aqueous acid or aqueous base? Ionic solutes and its dissociation is involved in a substance's solubility in an aqueous acid or base. This solubility can be expressed by a chemical equation in which a basic salt results when a a weak...

As I was reading text “ The solubility of most compounds increase with increasing temperature, but a substance that is retrograde soluble is one whose solubility decreases with increasing temperature.” Why dose this happen? How dose “retrograde soluble” substance work and why? Is there an...

Hi. I'm preparing for a chemistry exam and I have trouble with this former exam problem: The solubility of I_2\text{(s)} in water at 25ºC is 0.0013 M. Calculate the solubility of I_2\text{(s)} in a 0.1 M solution of KI(aq) by considering this equilibrium: I_2\text{(aq)}+I^-\text{(aq)}...

Why does the solubility of KNO3, in water, rises with increasing temperature and the solubility of Na2SO4 descreases? :approve: Thank you. :wink:

fe2O3 is soluble in hot HCl and it gives FeCl3. How can you get Fe2O3 back? could that be used to enrich Fe2O3 from a complex mixture? Is there any way to convert Fe2O3 in Fe (NO3)3?

Hi need a bit of help with a question! the solubility product of magnesium carbonate is 10^ -7.5. Calculate the concentration of Mg2+ and CO3 2- expected in a saturated solution assuming activity of both ions is 1.0 cheers in advance!

It's driving me crazy that I can't figure this out. I've read the section in the book like 5 times and its not helping at all...argh.. Here it is: In which of the following aqueous solutions would you expect AgCl to have the highest solubility? pure water 0.020 M BaCl2 0.015 NaCl 0.020...

hey i seem to be having a lot of trouble qith this question may i get some help? The standard potential of the cell below is + 0.9509 V at 25 oC. Calculate the solubility, normally called s, of AgI (Note: Enter the natural log of s (ln s) as your answer) Ag|AgI(s)|AgI(aq)|Ag i'm using nernst...

use you accepted value for the solubility product of lead 2 chloride to determine the solubility of lead 2 chloride in mol/L and g/L the accepted value is ksp=1.2*10^-5 Ksp=[Pb] [Cl]^2 1.2*10^-5 = (x) (2x)^2 x=0.014 mol/L 0.014 mol/L * 276.1 g/mol =3.98 g/L I don't know if I...

HELP! In this experiment I measured the initial mass of a piece of Al and then i put it into a beaker containing 100.0 mL of saturated PbCl2 The concentration I calculated for Pb is 6.12 *10^-^5 mol/L The concentration I calculated for Cl is 1.224* 10^-^4 mol/L Therefore my Ksp= [Pb]...

The pKa of p-nitrophenol is 7.15. Would you expect it to dissolve in sodium bicarbonate solution? The pKa of 2,5-dinitrophenol is 5.15. Will it dissolve in bicarbonate solution. Pka of bicarbonate solution is 6.34. Any help will be greatly appreciated, thanks.

Please help me with the following problems. 1.)(85) A 55-g sample of a geseous fuel mixture contains 0.51 fraction propane C3H8; the remainder is butane. What are masses of propane and butane in sample? Using the formula: Ax = n(solute)/n(total), i initially solved for total moles. I went...

I was wondering if their is a reltionship between cation solubility and the poistion of its element in the periodic table?

Hello, I posted this already in the chemistry forum, not noticing there's a homeowrk help forum here. Sorry for that. I'm still 2 more weeks abroad and the person with my on this field work didn't take this course so she's also not a big help for me. Other people who have to take this exam...

what does [HIn] and [In] stand for? what are the importance of them? are they the concentrations of H and OH? or pH and pOH? another Q: the compound Ag2S has solubility of 1.3 * 10^-4M at 25 degrees celsius. what is the ksp? i tried using the ICE table, but the answer i got was wrong. the...

Can you separate soluble compounds by changing the concentration? Are some soluble compounds more soluble than others? If you had a nitrate (KNO3, NaNO3, etc) and another less soluble compound in a 1.0M solution in water and you added more and more nitrate compound would the less soluble...

Hi, I am told that \text{BaCO}_3_{(s)} is sparingly soluble in water with a solubility product K_{sp} = 8.1\cdot10^{-9}~M^2. I have to write the expression for the solubility product, but how do I know which ions Ba and CO3 forms (e.g. Ba^{+},~Ba^{2+},~Ba^{3+},\ldots). I happen to know that...

Hello all I have a few questions about Precipitates and Solubility Rules (a) How do you write an equation for the dissociation of a salt in a solution? (b) How do you write a net ionic equation? (c) Which ions tend to form soluble salts? insoluble salts? ( Pb[2+] Na[+], k[+], NH4[+]...

hi. I am in grade11 chemistry and have a few questions regarding alcohols and solubility in water (polar/non-polar molecules). 1) how does the OH groups in surcrose and glycerin help them to be water soluble? 2) what would you use to clean your hands and the paint brush after painting...

hi. I am in grade11 chemistry and have a few questions regarding alcohols and solubility in water (polar/non-polar molecules). 1) how does the OH groups in surcrose and glycerin help them to be water soluble? 2) what would you use to clean your hands and the paint brush after painting...

If we prepare hydrochloride salt of a base, what are the factors determining solubility of the salt over a pH range of 1-12 assuming the pKa is 9.0? Under what circumstances we can anticipate precipitation? Does common ion effect play a role?

I need some quick bits of info regarding solubility. How do I determine whether one substance is more or less soluble than another substance? I know to look at the solubility rules but other than that, what characteristics and properties should I be looking at? Also, how do I determine...

I'm taking Chem II over the summer at a junior college and was given this problem on one of my homework assignments: I am told I have a sol'n containing the cations Ag, Al, As, Ba, Bi, Ca, Cd, Co, Cr, Cu, and Fe. My objective is to write all the compounds that would be precipitated if...

I'm taking Chem II over the summer at a junior college and was given this problem on one of my homework assignments: I am told I have a sol'n containing the cations Ag, Al, As, Ba, Bi, Ca, Cd, Co, Cr, Cu, and Fe. My objective is to write all the compounds that would be precipitated if...

Maybe some of you biology experts can help me with this problem https://www.physicsforums.com/showthread.php?p=245521#post245521 Thanks Nautica

I am looking for a formula that would relate temperature and solubility of a gas. I know that solubility has an inverse relationship and I also know that as the temperature of water increases from 0 C to around 30 C, the solubility of a gas in the water decreases to about half. Surely...

Maybe I am doing something horribly wrong here, but these numbers just make absolutely no sense to me. We are given solubility values which will subsequently be used for Ksp calculations. I was given hydrogen bromide and 5 solubility values (given in g/100g H2O) Since 1g = 1mL basically...

I was wondering if anyone could point me in the direction of some good information regarding why the solubility of gases decreases with the increase of temperature. The only description I have is a cheap example involving a pop can where as the temperature of the can is increased the kinetic...

At what depth (roughly speaking) will gaseous oxygen dissolve (because of the surrounding pressure) into the water? Again, not asking for a precise figure. Thanks