Number of results: 3,298
this is my work, would you please check my work, thank you! part A a liter of a solution saturated at 225 degree C with calcium oxalate, CaC2O4, is evaporated to dryness, giving a 0.0061 gm residue of CaC2O4. calculate the concentrations of the ions, and the molar solubility ...
April 8, 2007 by wendy
Would you expect the solubility of PbCl2 in water to change dramatically if it were to be dissolved into a solution of 3.091×10−4 M KCl? Yes, the solubility of PbCl2 would decrease dramatically. Yes, the solubility of PbCl2 would increase dramatically. No, the solubility...
May 4, 2013 by ssss
Question One Lead chloride dissolves in water according to PbCl2(s)<-> Pb^2+ + 2Cl^- (aq) The solubility in pure water has been measured to be 4.44g . L^-1 . Calculate the solubility product of lead chloride in pure water. Your answer should be in units of molarity ...
December 11, 2012 by Odesa
What is the molar solubility of Sr3(AsO4)2 and the concentration of Sr^+2 and AsO4^-3 in a saturated solution at 25C? the Ksp is 1.3 E -18. Show the balanced reaction.
June 10, 2012 by Chloe
What is the molar concentration of silver ion in a solution containing 1.3 × 10–4 M CrO42–, saturated with Ag2CrO4? The Solubility Product Constant, Ksp for Ag2CrO4 is 9 × 10–12 (A) 1.3 × 10–16 (B) 7 × 10–16 (C) 9 × 10–12 (D) 2.6 × 10–4 (E) 7 × 10–3
April 15, 2008 by LT
This pertains to the Merck Index. I would have to say that the exact solubility is not very clear like for ex. Sodium Sulfate solubility listed is: Sol in ~3.6 parts water -I don't know what to make of this information since If I have to fill up a chart that I make with the ...
September 10, 2007 by ~christina~
The solubility product of Mg(OH)2 is 1.2 x 10^-11. What minimum OH- concentration must be attained (for example, by adding NaOH) to decrease the Mg concentration in a solution of Mg(NO3)2 to less than 1.0 x 10^-10 M (molar)?
November 1, 2008 by Mischa
In which of the following solution would CaC2O4 have the highest molar solubility? Please help. A) 0.01 M NaCl B) 0.01 M H2C2O4 C) 0.01 M Na2C2O4 D) 0.01 M NaHC2O4 E) 0.01 M HCl I think it is E because it is a strong acid and will completely dissociate..
March 17, 2013 by Felix
I have no idea how to solve this problem, please help me out.... thanks a) A liter of a solution saturated at 25degree with calcium oxalate, CaC2O4, is evaporated to dryness, giving a 0.0061gm residue of CaC2O4. calculate the concentrations of the ions, and molar solubility ...
April 6, 2007 by wendy
Using the solubility rules, predict the solubility of each of the following compounds in water: (S= Soluble, I= Insoluble) a)CaCO©ý _______ b) Al(OH)©ý ______ c) Hg©üCl©ü _______ d) Pb(NO©ý)©ü _______
March 17, 2013 by Annette W
What is the molar solubility of CaF2 if o,1o mol of NaF are added to 1.0L of a saturated solution of CaF2? The Ksp for CaF2 is 4.0 x 10^11. I get 4,0 x 10^9. Is this right?
May 5, 2010 by Mary
In which of the following solution would CaC2O4 have the highest molar solubility? Please help. A) 0.01 M NaCl B) 0.01 M H2C2O4 C) 0.01 M Na2C2O4 D) 0.01 M NaHC2O4 E) 0.01 M HCl I think it is E because it is a strong acid and will completely dissociate
March 18, 2013 by Felix
Which of the following would you add to a mixture of CaCO3(s) and its saturated solution to increase the molar solubility of CaCO3: more water, Na2CO3, NaOH, NaHSO4? Explain.
March 19, 2012 by Justin
What is the molar solubility of copper(II) carbonate at 25 oC in a solution that is 0.055 M in copper(II) chloride? I have done one and I am not sure I am doing it correct. If you can show your work for myself to understand. That would be awesome. Thank You!!
October 30, 2011 by Maegan G
The molar solubility of calcium sulphate CaSo4 is 8.43 x 10-3(10 to the power of negative 3) M. Calculate the mass of solid CaSo4 which can be evaporated from 250.0 mL of a saturated solution of CaSO4.
October 8, 2013 by Riann
This is from a "effect of pH on the solubility of Ca(OH)2" lab: If excess Ca(NO3)2 were present, what effect would it have on the solubility of Ca9OH)2? also, in a "effect of comlex ion formaiton on the solubility of NiCO3" lab": If HCl(aq) were added to the NiCo3 precipitate...
March 27, 2011 by redgy
Using the thermodynamic data provided below, calculate the standard change in entropy when one mole of sodium nitrate is dissolved in water? S° (J/K•mol) NaNO3(s) 116.3 Na+(aq) 60.25 NO3–(aq) 146.4 Using the value you calculated, how will the solubility of sodium nitrate ...
May 3, 2011 by Nicole
Consider the equation: A + 4B=3C+3D, when equal masses of A and B are reacted, which is limiting? My possible answers are: A)if the molar mass of A is less than the molar mass of B, then B must be limiting. B) If the molar mass of A is greater than the molar mass of B, then A ...
March 21, 2012 by Jessica
A 1.0 L solution has 10.00 grams of CaCl2 dissolved in it. What is the Molar solubility of AgCl in this same solution? The Ksp for AgCl is 1.6 x 10-10 at this temperature. Hint: watch out for the common ion again.
April 12, 2014 by bekah
Explain clearly which out of the following combinations of solutes would result in the formation of a buffer solution? A) NH3 and HCl in a 2:1 molar ratio B) HCl and NaOH in a 1:2 molar ratio C) NH3 and NH4Cl in a 2:1 molar ratio D) NaOH and CH3COOH in a 1:1 molar ratio And: ...
April 1, 2013 by Jill
Calculate the molar solubility of Mg(OH)2 in water I know Mg(OH)2=> Mg2+ + 2OH- 2H2O=> H3O+ + OH- Ksp= [Mg2+][OH]2 Kw= [H30+][OH-] Mass balance [Mg2+]=2[OH] So.. [OH-]=2[Mg2+]+ [H3O+] Charge balance is where I get kind of confused I know that the positive charge is ...
July 20, 2007 by christina
Calculate the molar solubility of MgCO3 in a solution that already contains 1.7×10−3 M sodium carbonate. MgCO3 Ksp = 6.82 x 10-6 IMPORTANT NOTE: You must use the quadratic equation to solve this problem. (DrBob222- thank you so much for all your help!)
April 26, 2013 by Chloe
Determine the molar solubility of AgBr (Ksp = 5.40e-13) in 2.502 M NH3 if the complex ion [Ag(NH3)2]+ forms with a Kf = 1.70e7 will I need to make an chemical equation using the compounds they give me? and then do an ICE table?
April 5, 2014 by hershi
Equillibrium, an example given by my textbook confused me. First it shows a reaction inside a soft drink: co2(g)--><--co2(aq) but than it says the reaction inside a soft drink would involve solubility equillibrium because it involves a change in solubility between ...
August 6, 2009 by kevin
The solubility of AgCl(s) in water at 25 C is 1.33x10^-5 M and its deltaH of solution is 65.7 kJ/mol . What is its solubility at 60.1 C ? Please explain how to solve for this!!
March 22, 2013 by Lena
what is the solubility of barium sulfate in a solution containing 0.050 M sodium selfate? The Ksp value for barium sulfate is 1.1E-10. An insoluble salt with formula MX3 has a solubility product constant written in terms of solubility,s, in the form a) Ksp=s2 b)Ksp=4s3 c) Ksp=...
April 23, 2011 by Sarah (C)
There has to be a precipitate of calcium nitrate, Ca(NO3)2, and sodium chloride, NaCl because when I clicked none, it came out wrong. Please help http://en.wikipedia.org/wiki/Solubility check the solubility table there. Nitrates, and chlorides are soluble.
October 29, 2006 by none
Use Henry's law to determine the molar solubility of helium at a pressure of 1.5 atm and 25 degrees celsius . this is what I know... Sgas = kH x Pgas so then I plugged in... Sgas = 3.7 x 10-4 x 1.5 my answer was .055 and it is wrong. could someone please help show me what I am...
February 15, 2009 by reese
predict the solubility of 2-propanol in dichloromethane and in water. Can someone explain how they came to their conclusion because I just dont understand how to determine solubility.
March 8, 2012 by casey
Calculate the molar solubility of Cu(OH)2, Ksp = 2.2 × 10–20, in 0.91 M NH3. Don't forget to use the complexation reaction Cu2+ + 4 NH3 ⇌ Cu(NH3)42+, K = 5.0 × 1013. Round your answer to two significant figures and do NOT use scientific notation.
March 31, 2012 by Debbie
Consider a saturated solution of calcium fluoride in 0.086 M potassium nitrate. Complete the following tasks, and then answer the question. a) Write the chemical equation corresponding to Ksp. b) Write the defining expression for the thermodynamic solubility product constant, ...
October 7, 2012 by Ashley
a mixture contains two crystalline solid X and Y. Decide if pure X can be obtained by a proper recrystallization using solvent A. Include the exact volumes of solvent used and the amount of pure X obtained. GIVEN: Solubility of X in boiling A :200mg/ml solubility of X at room ...
January 21, 2013 by Anonymous
Calculate the molar solubility of Cu(OH)2, Ksp = 2.2 × 10–20, in 0.52 M NH3. Don't forget to use the complexation reaction Cu2+ + 4 NH3 ⇌ Cu(NH3)42+, K = 5.0 × 1013 What does he mean by the complexation reaction??? So confused, please help!!!
April 4, 2011 by Erin
I am using the melting points according to which melted first, second,and those that didn't melt within 2 minutes ; solubility in water; solubility in ethanol;and solution conductivity to group the elements.
January 19, 2009 by ashley
1.If its molar solubility is designated by “x”, then which of the following expressions best represents the solubility product for the substance Ag2SO4? a) x2 b) 27x4 c) 4x3 d) 108x5 e) 3x4 2. Consider the equilibrium, 4HCl(g) + O2(g) 2H2O(g) + 2Cl2(g). The equilibrium law ...
August 3, 2011 by tt
A 100 L reaction container is charged with 0.724 mol of NOBr, which decomposes at a certain temperature** (say between 100 and 150 oC) according to the following reaction: NOBr(g) ↔ NO(g) + 0.5Br2(g) At equilibrium the bromine concentration is 1.82x10-3 M. Calculate Kc (...
February 20, 2013 by Anonymous
I have a lot of trouble doing this chemistry exercise It says: The altitude of the lake affects the solubility of oxygen in lakes high in the alps. if the solubility of O2 from the air is 7.89 mg/L M at sea level and 25C, what is the solubility of O2 in moles/L at an elevation...
February 11, 2011 by Tatiana
The molar solubility of lead iodide is 1.45*10^-3M at 20 degrees C and 6.5*10^-3M at 80 degrees C . What are the values of delta H not and delta S not for dissolution of PbI2 ? PbI2(s) ---> Pb2+(aq) + 2I- (aq) You may assume that delta H and delta S are independent of ...
November 20, 2010 by Tal
The molarity of Sr2+ in a saturated solution of SrSO4 was determined to be 0.000500 M. Calculate the solubility product constant (Ksp) for SrSO4. SrSO4(s) = Sr^2+(aq) + SO4^2- (aq) Molar Mass (g/mol) SrSO4 183.68 This is what I know: Ksp = [Sr][SO4]
March 31, 2010 by Angel
Molar Mass Question
Hello, I have been asked to find the molar mass of ferrous ammonium sulfate [ NH4]2[Fe][SO4]2·6H2O] would i consider the molar mass of the water as well, why or why not?
November 15, 2010 by Moi
chem can u check answer please
the solubility of silver sulfate in water is 0.223%(w/v) at 35 degrees celsius.calculate the solubility product of this salt at this temp. I got 1.46 X 10^-6 M is this right please thanks Andy
May 23, 2010 by Andy
43. List and describe three factors that influence solubility: (Source-wikipedia) The solubility of a given solute in a given solvent typically depends on temperature. For many solids dissolved in liquid water, the solubility increases with temperature up to 100 °C. In liquid ...
November 1, 2010 by mysterychicken
the Ksp for CaF2 is 3.9*10-11. assuming that calcium flouride dissociates completely upon dissolving and that there are no other important equilibria affecting the solubility, calculate the solubility in pure water, of calcium floride in m/L and in g/L
October 10, 2010 by anon
Is the molar enthalpy of combustion of pentane the same as the molar enthalpy of formation of pentane? No. The molar enthalpy for the combustion is for the reacton C5H10 + (15/2)O2 ==> 5CO2 + 5H2O The molar enthalpy for the formaton is 5C(graphite) + 5H2(g) ==> C5H10(l) ...
September 21, 2006 by B
If the solubility of CaF2 (s) in water is 5.0 x 10^-3. The solubility will be A. The same in 0.10 M NaF B. less than 0.10 M NaF C. Higher in 0.10 M NaF D.None of the above
July 10, 2013 by Morgan
How would you start these problems? ...I suppose this is a continuation from this post: (replace the numbers with id=1395127807) But, I have yet figured out the ΔH ̊ and ΔS ̊ . But once that is figured out, how would I start problem #1? Also, for problem #2...
March 18, 2014 by Airin
Calculate activities of Ca2+ anf F- and the solubility of flurite in pure water at 25C without regard to possible hydroysis. Assume that all activity coefficients are equal to one. Express the solubility of florite in terms of mol/L and g/100mL?
September 11, 2010 by moon