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December 19, 2014

Search: oxalate

Number of results: 121

Chemistry
Determine the pH (to two decimal places) of a solution prepared by adding 15.9 mL of 0.0551 M sodium hydrogen oxalate (NaHOOCCOO) to 0.488 g of sodium oxalate (Na2OOCCOO). Hydrogen Oxalate pKb of 12.77 Oxalate pKb of 9.81
December 6, 2011 by Reven

Chemistry
Describe how to prepare a 0.0100M Solution of oxalate using solid sodium oxalate and a 500mL volumetric flask and water.
June 16, 2013 by Jessica

chemistry
determination of the oxalate content in k2 cu(c2o4)2 .2h2o, during standardization of permanganate solution using sodium oxalate, can the titration between Mno4- and C2o42- at 25degree celcius be perform?
June 26, 2012 by ABCx

Chemistry
a solution is prepared by dissolving 3.7500grams iron(III) oxalate in enough water to make 125.00mL of solution. 1. what is the molar concentration of iron(III) oxalate in this solution? 2. what is the molar concentration of oxalate ions in this solution?
April 1, 2014 by Anonymous

chemistry
Only 6.1 mg of calcium oxalate, Ca(C2O4) dissolves in 1.0 L of water at 25 Celsius. What is the solubility product of calcium oxalate?
May 23, 2010 by kris

Chemistry
THE MOLAR MASS OF CALCIUM OXALATE,CaC2O4 IS 128G/MOLE. WHAT % OF CARBON IS CALCIUM OXALATE?
July 24, 2008 by Persia

chemistry-Dr.Bob
ok for a lab we had to titrate a solution with KMnO4 and for each trial i got 22.83 mL,23.92, and 22.48 I need to find the mass percent of the oxalate ion. How would I do this? The equation is MnO4-+C2O4 2- -> Mn 2+ + CO2 In the lab we used about .1 g of the oxalate salt in...
May 5, 2008 by Trisha

Chemistry
1 mole of equimolar mixture of ferric oxalate and ferrous oxalate will require xmole of KMnO4 in acidic medium for complete oxidation, x isis: a) 0.5 mole b) 0.9 mole c) 1.2 mole d) 4.5 mole
July 26, 2014 by Susan

Chemistry
If 20.00mL of a solution that contains oxalate ion requires 10.00mL of 0.020M MnO4- solution in a titration, what was the molarity of the oxalate solution? 5C2O42- + 2MnO4- + 12H+ --> 2Mn2+ + 10CO2 + 8 H2O
March 23, 2010 by Megan

chem
a student paid little attention to the size of his burner flame while heating a 0.979 gram sample of calcium oxalate monohydrate. The final mass of the cooled solid was 0.670 gram. Was the reaction product anhydrous calcium oxalate?
September 19, 2012 by maxine

Chemistry
Explain how the calculated molarity of the potassium permanganate would be affected by each of the following experimental errors. In each case, you must also state if the calculated molarity is higher or lower than the actual morality. a) Some sodium oxalate was spilled after ...
December 1, 2011 by 4B

Chemistry
Explain how the calculated molarity of the potassium permanganate would be affected by each of the following experimental errors. In each case, you must also state if the calculated molarity is higher or lower than the actual morality. a) Some sodium oxalate was spilled after ...
December 1, 2011 by P102

Chemistry
With the mass percent of Fe, oxalate ion, and water; find the mass percent of potassium ion in the complex iron salt difference. Fe= 11.37% H2O= 12.24% oxalate= 28.01%
November 13, 2012 by Anonymous

Chemistry
Kc is 1.67 1020 at 25C for the formation of iron(III) oxalate complex ion: Fe3+(aq) + 3 C2O42-(aq) [Fe(C2O4)3]3-(aq). If 0.0200 M Fe3+ is initially mixed with 1.00 M oxalate ion, what is the concentration of Fe3+ ion at equilibrium?
December 2, 2014 by Bob

Chemistry- urgent!
When a solution of sodium oxalate (Na2C2O4) is added to a solution of lanthanum (III) chloride, lanthanum oxalate (molar mass 541.86 g/mol) The balanced net ionic equation for the reaction is: 3C2O4^2- (aq) + 2La^3+ (aq) --> La2(C2O4)3 (s) Thirty ml of 0.2000 M sodium ...
December 15, 2011 by Gabby

chem
The following equation describes the oxidation of an acidified solution of sodium oxalate (Na2C2O4) by potassium permanganate(KMnO4) 5C2O4 + 2MnO4 + 16H2SO4 --> 10CO2 + 2Mn + 16HSO4 + 8H20 What volume of 0.127M sodium oxalate in sulphuric acid will react with 3.57g of ...
April 7, 2009 by tomi

Chemistry
A 0.41 g sample of limestone was dissolved in HCl and all the calcium in the limestone was converted to Ca2+(aq). The solution was treated with excess ammonium oxalate, (NH4)2C2O4(aq), and it was found that 3.0 g of calcium oxalate, CaC2O4(s) was precipitated. Calculate the ...
September 20, 2012 by Bob

Chemistry
Kidney stones are composed of crystals of calcium oxalate, CaC2O4. The solubility of CaC2O4 is 6.7 x 10-5 g per 100 ml of solution. What is the pH of a saturated solution of calcium oxalate? (Molar masses of Ca, C and O are 40.0 g/mol, 12 g/mol, 16 g/mol respectively.) Thank ...
July 13, 2012 by Milana

chemistry
The principal component of many kidney stones is calcium oxalate,CaC2O4. A kidney stone recovered from a typical patient contains 8.5010^20 formula units of calcium oxalate. How many moles of CaC2O4 are present in this kidney stone?
October 19, 2011 by shannon

chemistry
This equation decribes oxidation of acidified solution of sodium oxalate(Na2C2O4) by potassium permanganate(KMnO4): 5 C2O4^2- + 2Mn04^- + 16H2SO4 to produce 10Co2 + 2Mn^2- + 16HSO4^- + 8H2O. what volume of 0.127M sodium oxalate in sulphuric acid will react with 3.57g of ...
February 6, 2014 by Temmick

Chemistry
Suppose you want a mixture that contains 2.5 grams of iron ion and three times as many moles of oxalate ion as moles of iron. If the iron comes from iron(iii)chloride and the oxalate ion from K2C2O4, how many grams of each of the compounds should you combine?
March 10, 2010 by Tiffany

chem
Equal volume of a 0.02 M Zn+ solution and a 2.0M NH3 solution are mixed. Kf for [Zn(NH3)4] is 4.1*10^8. If enough sodium oxalate is added to make the solution 0.1 M in oxalate, will ZnC2O4 precipitate. Ksp ZnC2O4= 2.7*10^-8. I set up an ICE table which have me: Kf= (Zn(NH3)4...
August 10, 2009 by Sara

General Chemistry
How do I calculate the concentration of KmNO4 when.. Initial Volume is 50mL 0.11g sodium oxalate Volume of KMnO4 used to titrate oxalate and acid= 34.0 mL Volume of KMnO4 used to titrate acid only= 0.10 mL Please help me Thank you!
October 26, 2011 by Ashley

Chemistry
1.) A 3.000gram sample of a hydrate compound containing Co, C2O4, and H2O was combusted to give 1.316g of Co3O4. What is the percentage of Cobalt in the oxide? 3.) 2.000 grams of a sample containing Co, C2O4, and H2O showed there to be 0.9621g of oxalate in the sample. Was is...
March 3, 2013 by Robert

chemistry
Using your 0.0100M oxalate solution and only the equipment and supplies listed below, describe how to prepare a 0.00025M solution of oxalate. Note, you are not allowed to add volumes with pipettes. (example, if you want 20mLs, you can not use a 10mL + 10mL addition as this ...
June 17, 2013 by Annie

Chemistry
Using your 0.0100M oxalate solution and only the equipment and supplies listed below, describe how to prepare a 0.00025M solution of oxalate. Note, you are not allowed to add volumes with pipettes. (example, if you want 20mLs, you can not use a 10mL + 10mL addition as this ...
June 17, 2013 by Jessica

Chemistry
A 0.750 g sample of an unknown solid is dissolved in 100 mL of water and acidfied with 25 mL of 3 M H2SO4 then titrated with a 0.0200 M KMnO4 solution. If the unknown solid requires 12.5 mL of the KMnO4 solution to reach the endpoint, what is the % sodium oxalate in the ...
April 9, 2013 by Aaron

chemistry
The net ionic equations for the following 1. Dissolution of silver oxalate with nitric acid 2. Complexation of the iron(III) by the thiocyanate ion 3. Precipitation of the carbonate ion with barium ion 4. precipitation of the oxalate ion with barium ion 5. precipitation of the...
November 30, 2010 by Jake

Science
What is phenyl oxalate ester?
November 27, 2011 by Jason

chemistry
Is calcium oxalate, CaC2O4, soluble in water?
April 10, 2012 by slim

chemistry
how to determine the oxalate and copper in K[Cu(C2O4)2].2H2O
May 8, 2013 by rayan

Chemistry
how many moles of Na2C2O4 are there in 25.00 mL of a .7654 M solution of sodium oxalate?
March 3, 2009 by Kim

Chemistry
The solubility of zinc oxalate is 7.9 x 10 ^-3 M at 18 degrees C. Calculate its Ksp.
November 29, 2010 by Pink

chem
how to say 2M K2C2O4 in english is it 2 molarity of potassium oxalate?
October 9, 2011 by nessa

CHEMISTRY> HELP QUICK! pls
1. What is the amount of oxalate in 2 mL of 0.035M solution? a) 7 10C2 mole b) 1.75 10C2 mole c) 7 10C5 mole d) 1.75 10C5 mole 2. Sodium oxalate may be prepared by titrating oxalic acid (C2H2O4) with sodium hydroxide, according to the equation: C2H2O4(aq) + ...
August 28, 2010 by Lucinda

chemistry
What is the net ionic equation for calcuim ion and ammonium oxalate?
September 28, 2010 by nichole

chemistry
how many grams of sodium oxalate, Na2C2O4, could be obtained from 213 g of C6H6?
February 10, 2014 by hkgdfjtrth

Chem
I went through the periodic table several times, and I could not find oxalate!!! Where is it? Thank you.
March 8, 2009 by Jeff

Chemistry
What is the balanced equation for copper (II) sulfate pentahydrate and potassium oxalate monohydrate?
July 6, 2012 by Zach

chemistry
If you are given 718 grams of lead (iv) oxalate, how many atoms of oxygen do you have?
February 28, 2013 by Anthony

chemistry
1L of a buffer composed of NaHC2O4 and Na2C2O4 has a pHof 4.0 and a total molarity of 1. a). what would the effect on the pH be of adding 1 gram of sodium hydrogen oxalate to this buffer? b). what would be the effect on the pH of adding 1 gram of sodium oxalate to the original...
March 10, 2013 by Ashley

Chemistry
What is the formula for calcium oxalate dihydrate when 100 degree Celsius heat is added?
May 16, 2010 by Christine

Chemistry
Describe an experimental method for the estimation of oxalate in the product, potassium trioxalatoaluminate(III)
March 7, 2013 by ESPINE

Lab/Chemistry
In lab, I weighed out and found the molarity of 1.108g Na2C2O4 and 1.100g K3Fe(C2O4)3. I titrated an average of 0.0335L of the sodium oxalate solution with KMnO4(potassium permanganate). I then titrated an average of 0.0169L of K3Fe(C2O4)3 X 3H2O with potassium permanganate. I...
February 26, 2014 by Tricia

Chem
what mass of calcium oxalate can be dissolved in 180 ml of distilled water before a precipitate forms?
November 29, 2010 by Melissa

Chemistry please help
In lab, I weighed out and found the molarity of 1.108g Na2C2O4 and 1.100g K3Fe(C2O4)3. I titrated an average of 0.0335L of the sodium oxalate solution with KMnO4(potassium permanganate). I then titrated an average of 0.0169L of K3Fe(C2O4)3 X 3H2O with potassium permanganate. I...
February 26, 2014 by Tricia

Chemistry
Based solely on the amount of available carbon, how many grams of sodium oxalate Na2C2O4 can be obtained from 255 g of C6H6?
February 11, 2014 by sjlfohdsifau

chemistry
How many grams are there in 25 moles of sodium oxalate? Please explain step by step. I'm confused.
July 28, 2009 by jaden

Cemistry
Why do we have to heat KMnO4 solution when we have to do the titration with the oxalate ions for such reaction?
May 18, 2010 by Tukana

chemistry
How many moles of water are there in 5 moles of Tungsten(V)oxalate tetrahydrate?
October 19, 2012 by chemdummy

chemistry
Calcium oxalate dihydrate is CaC2O4 2H20. Write the equation for the reaction which will occur when this hydrate is heated to a temperature slightly in excess of 100 degrees C.
January 26, 2010 by michelle

chemistry
What is the molarity of 20.00 mL of a stock solution made with 12.003 g of potassium oxalate monohydrate? NOTE: Give your answer to 3 significant figures and do not report units with your response.
October 10, 2010 by therese

science
During standardization of permanganate solution using sodium oxalate, can the titration between Mno4- and C2o42- at 25degree celcius be perform? state the reasons.
October 29, 2013 by Angela

Chemistry (Analytical)
Solve for the number of grams of Ca2+ ion in a solution prepared by adding 1.00 gram of calcium oxalate (Ksp=1.3x10^-8)powder to 100 mL at pH 9.
February 8, 2014 by Nathan Berry

chemistry
What is the net ionic equations for: 1. Arsenic(III) iodide + Sodium sulfide 2. Lead(II) nitrate + Ammonium oxalate 3. Magnesium chromate + Copper(II) sulfate
April 27, 2014 by Collin

Chemistry
Beside the usual method of titrating with KMNO4, what is/are the alternative method/s to test for the presence/amount of oxalate in a compound?
March 23, 2010 by Alan

chemistry
Hassium (III)oxalate contains 2.25 mol of Carbon atoms. What is the number of moles of oxygen atoms in the sample?
October 25, 2012 by Carina

chemistry
How many moles are there in 5 moles of Tungsten(V)oxalate tetrahydrate?
October 16, 2012 by Diane

chemistry
4.0 gram of ferrous ammonium sulphate, FeSO4*(NH4)2SO4 * 6H2O, is used. Since the oxalate is in excess , Calculate the theoretical yield of the iron complex
November 3, 2009 by Anonymous

chemistry
4.0 gram of ferrous ammonium sulphate, FeSO4*(NH4)2SO4 * 6H2O, is used. Since the oxalate is in excess , Calculate the theoretical yield of the iron complex.
November 16, 2011 by Anonymous

chem
In an experiment 4.0 g of ferrous ammonium sulphate, FeSO4.(NH4)2SO4.6H2O, is used. Since the oxalate in in excess, calculate the theoretical yield of the iron complex?
November 16, 2011 by Anonymous

Chemistry - Oxidation, Reduction Reactions
Fe^3+ + C204^-2 (oxalate) -> Fe^2+ + CO3 Which is the oxidizing agent and the reducing agent in the chemical equation above?
January 31, 2011 by Jenny

Biology
4.0 g of ferrous ammmonium sulphate, FeSO4(NH4)2SO4 6H2O, is used. Since the oxalate is in excess, calculate the theoretical yield of the iron complex. Please help with this question. Thank you.
November 16, 2010 by Serena

Chemistry
A 1.00-L solution saturated at 25C with calcium oxalate (CaC2O4) contains 0.0061 g of CaC2O4. The solubility constant (Ksp) for this salt is [CaC2O4=128.09 g/mol]
April 16, 2012 by Anne

College Chemistry
A 1.00-L solution saturated at 25C with calcium oxalate (CaC2O4) contains 0.0061 g of CaC2O4. The solubility constant (Ksp) for this salt is [CaC2O4=128.09 g/mol]
December 6, 2010 by Patrice

chem
If 0.208g of an unknown salt of oxalate ion requires 25mL of 0.02 M MnO4^- solution, calculate the molar mass and write the molecular formula of the unknown ( oxalare is the anion, what is the cation?).
April 8, 2012 by mike

chem
A sample of potassium hydrogen oxalate, KHC204, weighing 0.717 g, was dissolved in water and titrated with 18.47 mL of an NaOH solution. Calculate the molarity of the NaOH solution.
November 21, 2012 by amanda78

Chemistry
1. Calculate the concentration of H3O+, HC2O4-1, and oxalate ion (C2O42-) in a 0.175 M solution of oxalic acid (C2H2O4). [For oxalic acid, Ka1 = 6.5 10-2, Ka2 = 6.1 10-5.]
December 11, 2014 by Anonymous

Adv Chem 12th grade
4. Given the chemical formulas of the following compounds, name each compound and state the rules you used to determine each name. RbF CuO (NH4)2C2O4 (Note: C2O4 is called oxalate.)
December 19, 2012 by Taylor

chemistry
A 0.8378 g sample of calcium oxalate is heated to 1000oC, CaC2O4 = CaO + CO + CO2 Calculate (a) the moles of CaO remaining after ignition (b) the mmoles of CO evolved (c) the weight of CO2 produced.
June 23, 2012 by mary

chemistry
determine the solubility product of the slightly soluble salt calcium oxalate,cac2o4 by titrating 200cm^3 sample of a suturated solution of this salt with 0.00135mol dm^3 HCl solution.calculate Ksp?
August 6, 2012 by promise

Chemistry
Oxalic acid is a relatively strong diprotic acid with Ka1 = 5.6 10-2 and Ka2 = 5.1 10-5. What is the oxalate ion, C2O42-, concentration in a 0.10 M oxalic acid solution? a. 0.052 b. 0.073 c. 0.10 d. 5.6 10-2 e. 5.1 10-5
May 26, 2011 by Fatima

Chemistry
3.392 g of unknown oxalate product is titrated with 0.201 M KMnO4. The initial burette reading is 11.23 mL, and the final burette reading is 46.88 mL. How many moles of MnO4- were added? Once again any helpwould be greatly appreciated.
September 4, 2008 by George

chemistry
A) solve for the number of grams of Ca2+ ion in a solution prepared by adding 1 gram of calcium oxalate powder to 100 mL at pH 9. (B) explain what happens to the dissolved Ca2+ calculated before if you reduce the pH of this solution to 2.
February 10, 2014 by naresh

Chemistry
4.0 g of ferrous ammonium sulphate, FeS04(NH4)2 SO4 6H20, is used. The oxalate is in excess, calculate the theoretical yield of the iron complex. Can someone please show me how to calculate a question like this please? Thank you
November 2, 2009 by rasuka_geo

chemistry
Calculate the concentration of oxalate ion (C2O42−) in a 0.175 M solution of oxalic acid (C2H2O4). [For oxalic acid, Ka1 = 6.5 10−2, Ka2 = 6.1 10-5.]
February 22, 2011 by sarah

chemistry
Titration of 50.00 mL of 0.0521 M sodium oxalate, Na2C2O4, required 38.71 mL of a potassium permanganate solution: 5 C2O42- + 2MnO4- + 16H+ = 2Mn2+ + 10 CO2 + 8H2O Calculate the molarity of the potassium permanganate solution.
June 23, 2012 by mary

Chemistry
How would the calculation percent of oxalate of the unknown affected when weighting out the unknown solid the actual mass is .758 grams however the mass is mistakenly recorded as .785 grams
October 6, 2012 by Karamu

College Chemistry
a 1.00-L solution saturated at 25C with calcium oxalate (CaC2O4) contains 0.0061 g of CaC2O4. The solubility constant (Ksp) for this salt is [CaC2o4= 128.09 g/mol] a) 6x10^ -3 b) 4.6x10^ -8 c) 2.3x10^ -9 d) 1.5x10^-4 if you could please work it out for me, thank you
December 2, 2010 by Shanice

Chemistry
In blueprinting, there are to reactions that occur. The first one: Fe^3+ + C204^-2 (oxalate) -> Fe^2+ + CO3 must occur with light. Can the second reaction described by the chemical equation below occur without light? Fe^2+ + Fe (CN)6^-2 -> Fe3[Fe(CN)6]2 Please explain ...
January 31, 2011 by Jenny

chemistry
Given: Fe(C2O4)3^3- The Fe^3+ center is surrounded by three oxalate anions (C2O4^2-) that acts as bidentate ligands What is the electron config of an isolated Fe atom (no ligand bound to it)? and what is the electron config of an isolated Fe^3+ cation?
April 21, 2008 by tristen

Chemistry
An unknown hydrate of copper (II) oxalate is to be identified in the lab. The following data was collected by a student: Mass of crucible 23.776 g Mass of crucible + hydrate 24.889 g Mass of crucible + anhydrate 24.530 g Thank you
October 23, 2011 by Mom

Chemistry
What is the mass of La2(C2O4)3*9H2O, can be obtained from 650mL of 0.0170 M aq solution of LaCl3 by adding a stoichiometric amount of sodium oxalate. I don't know how to balance the equation for this..i started: LaCl3+ Na2C2O4 -> La2(C2O4)3*9H2O + NaCl
October 9, 2009 by Sindy

chemistry
The reaction of aqueous calcium bromide and aqueous lithium oxalate is represented by the balanced net ionic equation. Ca2+(aq) + C2O42-(aq) → CaC2O4(s) Give the balanced formula equation for the reaction. Include the states.
January 20, 2010 by bubble

Chemistry - Blue Printing Experiment
Which of the two reactions in Blue Printing is an oxidation-reduction reaction? What is the oxidizing agent and the reducing agent? Fe^3+ + C204^-2 (oxalate) -> Fe^2+ + CO3 Fe^2+ + Fe (CN)6^-2 -> Fe3[Fe(CN)6]2 Can the second reaction occur in the absence of light? ...
January 29, 2011 by Bam

chemistry
oxalic acid, h2c2o4, is a weak acid capable of providing two H3O+ ions. ka=.059 k2=6.4E-5 the [h3o]+ in a .38 M solution of h2c2o4 is .12M and can be calculated by the first ionization step only. what is the equilibrium concentration of the oxalate ion c2o4^-2, in the .38 M ...
December 4, 2010 by anonymous

earth science
I need to draw a diagram showing delta, oxalate, tributary and meander. I also need to draw a diagram showing water table, zone of saturation, cone of depression, working well, dry well, aquitard, aquifer, spring, perched water
November 11, 2010 by Ethan

chemistry
In a volumetric analysis experiment, a solution of sodium oxalate (Na2C2O4) n acidic solution is titrated with a solution of potassium permanganate (KMnO4) according to the following balanced chemical equation: 2KMnO4(aq)+8H2SO4(aq)+5Na2C2O4(aq)-> 2MnSO4(aq)+8H2O(l)+CO(g)=...
November 17, 2014 by Monteshia

Chemistry
how many moles of Na2C2O4 are there in 25.00 mL of a .7654 M solution of sodium oxalate? How many moles of KMn)4 are required to reach with the moles of Na2C2O4 in the last problem? and also, if the KmnO4 of the last problem is in 30.30mL of solution what is the molarity (M) ...
March 3, 2009 by NEED ASAP FOR TOM MORNING!! PLZ HELP!!!

chemistry
The reaction of aqueous zinc chloride and aqueous sodium oxalate is represented by the balanced ionic equation. Zn2+(aq) + 2Cl-(aq) + 2Na+(aq) + C2O42-(aq) → ZnC2O4(s) + 2Na+(aq) + 2Cl-(aq) Give the balanced net ionic equation for the reaction. Include the states.
November 23, 2010 by Amrita

Chemistry. Please :(
1. If 23.00 grams of carbon dioxide and 18.75 grams of water are formed from the combustion reaction. What is the percent yield for CO2 and H20. How much in grams of the excess reactant remains? 2. Balance the equation and determine the mass in grams of hydrogen gas produced ...
April 25, 2014 by Cassy

chemistry
1. A solution of sodium oxalate has a pH of 7.82. The [OH-] in mol/L must be which of the following: a) 6.18 b) 1.5 x 10-8 c) 6.6 x 10-7 d) 7.82 e) -7.82 2. When 0.93 mol of O2 and 0.56 mol of NH3 are mixed together and allowed to come to equilibrium according to the equation...
August 3, 2011 by tt

chemistry
Which of the following safety precautions is necessary for the 'Preparation of a Complex Iron Salt' experiment? A. Oxalate compounds are easily absorbed through the skin and toxic to kidneys use gloves while handling. B. Ethanol is flammable avoid ignition sources. C. 3% H2O2 ...
June 28, 2010 by Judy

chemistry
The urine excreted by an adult patient over 24 hours was collected and diluted to give 2.000L sample. at ph 10 EDTA FORMS 1:1 COMPLEX WITH BOTH Mg2+ and Ca2+ and after buffering at this pH a 10mL aliquot of the sample required 26.81mL of 0.003474M EDTA for titration The ...
March 12, 2012 by jenny

chemistry
The urine excreted by an adult patient over 24 hours was collected and diluted to give 2.000L sample. at ph 10 EDTA FORMS 1:1 COMPLEX WITH BOTH Mg2+ and Ca2+ and after buffering at this pH a 10mL aliquot of the sample required 26.81mL of 0.003474M EDTA for titration The ...
March 12, 2012 by TOM

Chemistry
4.0 gram of ferrous ammonium sulphate, FeSO4*(NH4)2SO4 * 6H2O, is used. Since the oxalate is in excess , Calculate the theoretical yield of the iron complex FeSO4NH4)2SO46H2O + H2C2O42H20 --> FeC2O4 + (NH4)2SO4 + H2SO4 + 8H2O 6FeC2O4 + 3H2O2 + 6K2C2O4H2O --> 4K3[Fe(...
November 15, 2010 by Kesha

Chem
4.0 gram of ferrous ammonium sulphate, FeSO4*(NH4)2SO4 * 6H2O, is used. Since the oxalate is in excess , Calculate the theoretical yield of the iron complex. FeSO4NH4)2SO46H2O + H2C2O42H20 --> FeC2O4 + (NH4)2SO4 + H2SO4 + 8H2O 6FeC2O4 + 3H2O2 + 6K2C2O4H2O --> 4K3[Fe(...
November 24, 2010 by Pat

chemistry
Really need help on figuring out the formula for Iron Complex. The question was: 4.0 g of ferrous ammonium sulphate, FeS04(NH4)2*SO4*6H20, is used. The oxalate is in excess, calculate the theoretical yield of the iron complex. I got the moles of ferrous ammonium sulfate but I ...
November 28, 2010 by Nika

chem
i was reading a safety guide book and it asked one of the following questions. Which of the following safety precautions is necessary for the 'Preparation of a Complex Iron Salt' experiment? A. 3% H2O2 is a mild oxidizing agent avoid contact with the skin. B. Oxalate compounds...
August 10, 2008 by so

Chemistry
In a previous experiment, 0.800 g of the green complex iron salt was placed in an Erlenmeyer flask and heated with concentrated sulfuric acid until all oxalate ion was destroyed (CO2, SO2 and H2O are formed). Ferric ion (Fe3+) remained in solution and was reduced to Fe2+ by ...
July 12, 2010 by Sam

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