Number of results: 149
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
Tuesday, December 6, 2011 at 10:34am by Reven
chemistry-Dr.Bob
About 0.1 g of the oxalate salt won't do it if you're looking for any kind of quantitative answer. And with buret readings to the second place, you must be looking for a decent answer. First balance the equation. Have you determined the molarity of the KMnO4? or is ...
Monday, May 5, 2008 at 5:53pm by DrBob222
Chemistry
I am doing a lab report involving limiting reactants and percent compostition. The reactans are calcium chloride dihydrate and potassium oxalate monohydrate, which yeilds calcium oxalate monohydrate. My question is which product should i choose as my varied amount when doing ...
Friday, July 13, 2012 at 9:32pm by Leslie
chemistry
Oxalate ion is C2O4^-2. Bioxalate (or hydrogen oxalate) is HC2O4^-.
Thursday, November 1, 2007 at 9:44pm by DrBob222
Chemistry
THE MOLAR MASS OF CALCIUM OXALATE,CaC2O4 IS 128G/MOLE. WHAT % OF CARBON IS CALCIUM OXALATE?
Thursday, July 24, 2008 at 8:11pm by Persia
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?
Sunday, May 23, 2010 at 4:13am by kris
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?
Tuesday, June 26, 2012 at 10:52am by ABCx
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?
Sunday, April 29, 2007 at 11:45pm by ABCx
chemistry
If you know the equation, post it and I can help you through it. You don't give enough information about the problem for me to write the equation. "Since the oxalate is in excess" doesn't tell me what the oxalate is or what the iron complex is.
Tuesday, November 3, 2009 at 1:08am by DrBob222
AP Chemistry
There are two standard lab procedures for determining oxalate. One is a gravimetric procedure in which the C2O4^2- is put into solution and precipitated as CaC2O4, filtered, dried, and weigh the CaC2O4, then calculate percent. The other is a volumetric procedure in which the ...
Wednesday, October 17, 2012 at 7:39pm by DrBob222
Chemistry
Why do you want to calculate excess oxalate line? The only part you're interested in is the part the combined with calcium and you have weighed that. The excess oxalate simply stays in solution and I don't know that you need to worry about it.
Monday, March 25, 2013 at 10:32pm by DrBob222
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
Tuesday, March 23, 2010 at 7:47pm 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?
Wednesday, September 19, 2012 at 11:46am 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 ...
Thursday, December 1, 2011 at 11:38pm by P102
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 ...
Thursday, December 1, 2011 at 1:35am by 4B
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%
Tuesday, November 13, 2012 at 2:07pm by Anonymous
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 ...
Tuesday, April 7, 2009 at 5:25pm by tomi
chemistry
The principal component of many kidney stones is calcium oxalate,CaC2O4. A kidney stone recovered from a typical patient contains 8.50×10^20 formula units of calcium oxalate. How many moles of CaC2O4 are present in this kidney stone?
Wednesday, October 19, 2011 at 12:29am by shannon
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 ...
Monday, May 5, 2008 at 5:53pm by Trisha
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 ...
Friday, May 2, 2008 at 1:04am by Trisha
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 ...
Friday, July 13, 2012 at 9:32pm by Milana
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 ...
Thursday, September 20, 2012 at 12:18am by Bob
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?
Wednesday, March 10, 2010 at 10:26pm by Tiffany
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 ...
Thursday, December 15, 2011 at 11:45pm by Gabby
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...
Sunday, March 3, 2013 at 10:01pm by Robert
Chemistry
Note iron(III) is written with capital Is and not lower case is. 2.5 g Fe/55.85 = xx moles Fe you need. (I have rounded here. You should go through and be a little more accurate. I will round down the line, too, so it will be necessary for you to through all of the ...
Wednesday, March 10, 2010 at 10:26pm by DrBob222
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!
Wednesday, October 26, 2011 at 11:42pm by Ashley
chem
Write the equation between oxalate and permanganate and balance it. Calculate mols MnO4^- = M x L = ? Using the coefficients in the balancaed equation, convert mols MnO4^- to mols C2O4^2-. Then mols = grams/molar mass You have mols and grams, solve for molar mass. Then ...
Sunday, April 8, 2012 at 9:42pm by DrBob222
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...
Tuesday, November 30, 2010 at 12:03pm by Jake
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 ...
Tuesday, April 9, 2013 at 3:54pm by Aaron
Science
What is phenyl oxalate ester?
Sunday, November 27, 2011 at 2:12pm by Jason
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...
Monday, August 10, 2009 at 7:50pm by Sara
chemistry
Your know the charge of the oxalate ion (you should have these memorized) http://www2.pvc.maricopa.edu/tutor/chem/chem130/nomenclature/polyatomicion.html , so knowing that, and knowing O (the basic seven rules), you know C and O. Then, you know Fe from the oxalate charge, and ...
Tuesday, April 22, 2008 at 12:31am by bobpursley
Chemistry
CaC2O4 is more soluble in the acidic buffered solution that it would normally be because of the formation of the bioxalate (hydrogen oxalate) ion. CaC2O4 ==> Ca^+2 + C2O4^= And H^+ + C2O4^= ==> HC2O4^- And H^+ + HC2O4^- ==> H2C2O4 Look up Ksp for CaC2O4. (...
Tuesday, October 30, 2007 at 8:18pm by DrBob222
chemistry
Is calcium oxalate, CaC2O4, soluble in water?
Tuesday, April 10, 2012 at 10:52pm by slim
chemistry
how to determine the oxalate and copper in K[Cu(C2O4)2].2H2O
Wednesday, May 8, 2013 at 11:49am by rayan
chem
how to say 2M K2C2O4 in english is it 2 molarity of potassium oxalate?
Sunday, October 9, 2011 at 5:49pm by nessa
Chem
I don't get the connection between the oxalate ion (C2O4^-2) and the name salicylate.
Thursday, February 24, 2011 at 6:27pm by DrBob222
chemistry
What is the net ionic equation for calcuim ion and ammonium oxalate?
Tuesday, September 28, 2010 at 12:12am by nichole
earth science
Here are some diagrams to look at: http://search.yahoo.com/search?fr=mcafee&p=how+to+draw+a+diagram+showing+delta%2C+oxalate%2C+tributary+%26+meander Sra
Thursday, November 11, 2010 at 3:12pm by SraJMcGin
Chemistry
The solubility of zinc oxalate is 7.9 x 10 ^-3 M at 18 degrees C. Calculate its Ksp.
Monday, November 29, 2010 at 9:06pm by Pink
Chem
I went through the periodic table several times, and I could not find oxalate!!! Where is it? Thank you.
Sunday, March 8, 2009 at 8:26pm by Jeff
Chemistry
Describe an experimental method for the estimation of oxalate in the product, potassium trioxalatoaluminate(III)
Thursday, March 7, 2013 at 9:59am by ESPINE
chemistry
If you are given 718 grams of lead (iv) oxalate, how many atoms of oxygen do you have?
Thursday, February 28, 2013 at 4:59pm by Anthony
Chemistry
What is the balanced equation for copper (II) sulfate pentahydrate and potassium oxalate monohydrate?
Friday, July 6, 2012 at 1:02pm by Zach
Chemistry
What is the formula for calcium oxalate dihydrate when 100 degree Celsius heat is added?
Sunday, May 16, 2010 at 9:48am by Christine
Chemistry
Oxalate can be pptd as CaC2O4 and determined gravimetrically. I have done both and they work fine.
Tuesday, March 23, 2010 at 4:05pm by DrBob222
Chemistry
how many moles of Na2C2O4 are there in 25.00 mL of a .7654 M solution of sodium oxalate?
Tuesday, March 3, 2009 at 12:46am by Kim
chemistry
try oxalate even thought that is C2O4 -2. I came up with nothing for a negative 1 ion
Thursday, November 1, 2007 at 9:44pm by Avonlea
Chem
what mass of calcium oxalate can be dissolved in 180 ml of distilled water before a precipitate forms?
Monday, November 29, 2010 at 4:05pm by Melissa
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...
Sunday, March 10, 2013 at 10:00pm by Ashley
Science
Rubidium fluoride Cupric oxide (because the Cu valance is +2; +1 is also possible) Ammonium oxalate I don't know the naming rules.
Wednesday, December 19, 2012 at 7:09pm by drwls
chemistry
More information is needed on the molarity of the solution. Are you sure that compound even exists? The formula for sodium oxalate is Na2C2O4
Monday, February 20, 2012 at 2:20am by drwls
Science
Try some of the following links for information: http://www.google.com/search?q=What+is+phenyl+oxalate+ester%3F&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a Sra
Sunday, November 27, 2011 at 2:12pm by SraJMcGin
chemistry
How many moles of water are there in 5 moles of Tungsten(V)oxalate tetrahydrate?
Friday, October 19, 2012 at 8:14am by chemdummy
Chemistry
a) Find the empirical formula for KxFey(C2O4)z·nH2O given % percents: potassium = 34.5% iron = 11.4% water = 11.0% oxalate = 43.1 % Take a 100 g sample. That will give you 34.5 g K 11.4 g Fe 11.0 g H2O 43.1 g oxalate (C2O4) Now divide mols = g/molar mass. From mols of ...
Friday, May 2, 2008 at 1:58pm by DrBob222
Chemistry
I'll do one and leave the other for you. Label these rates as 1, 2, and 3. Then they follow this scheme. rate = k*[Hg2Cl2]x[C2O4^-2]y You want to determine x and y, the exponents. Look for rates where concn is the same for one of them and different for the other. 1 is ok ...
Wednesday, October 27, 2010 at 3:19am by DrBob222
chemistry
How many moles are there in 5 moles of Tungsten(V)oxalate tetrahydrate?
Tuesday, October 16, 2012 at 12:37pm by Diane
Cemistry
Why do we have to heat KMnO4 solution when we have to do the titration with the oxalate ions for such reaction?
Tuesday, May 18, 2010 at 4:46pm by Tukana
chemistry
How many grams are there in 25 moles of sodium oxalate? Please explain step by step. I'm confused.
Tuesday, July 28, 2009 at 1:05pm by jaden
Cemistry
Mostly its for the increase in reaction rate for the permanganate to oxidize the oxalate ion. Another reason could be, but it isn't a huge one, to help rid the solution of the CO2 oxidation product.
Tuesday, May 18, 2010 at 4:46pm by DrBob222
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.
Tuesday, January 26, 2010 at 9:53am by michelle
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?
Tuesday, March 23, 2010 at 4:05pm 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?
Thursday, October 25, 2012 at 10:45pm by Carina
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?
Wednesday, November 16, 2011 at 3:09am 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.
Wednesday, November 16, 2011 at 1:45am 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
Tuesday, November 3, 2009 at 1:08am by Anonymous
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.
Tuesday, November 16, 2010 at 12:14am by Serena
chemistry redox titration
Read the problem. mols oxalate = M x L M = 0.1M volume = 10.0mL = 0.010 L big as life right there in the problem.
Sunday, April 8, 2012 at 9:33pm by DrBob222
Chemistry
Here is some reading for you. Scroll to the very end for the Fe complex with oxalate ion but reading earlier in the site will explain what is going on.
Monday, April 20, 2009 at 8:35pm by DrBob222
Biology
Check some of the following links to see if anything there can help you: http://search.yahoo.com/search?fr=mcafee&p=4.0+g+of+ferrous+ammmonium+sulphate%2C+FeSO4%28NH4%292SO4+6H2O%2C+is+used.+Since+the+oxalate+is+in+excess%2C+calculate+the+theoretical+yield+of+the+iron+...
Tuesday, November 16, 2010 at 12:14am by SraJMcGin
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.
Sunday, October 10, 2010 at 8:22pm by therese
Chemistry
You haven't written all of your procedure for the oxalate hasn't been added at this time. One reason NaOH is added slowly is to prevent the pptn of Al(OH)3.
Monday, March 22, 2010 at 5:28pm by DrBob222
CHEMISTRY> HELP QUICK! pls
1. What is the amount of oxalate in 2 mL of 0.035M solution? a) 7 ¡Á 10¨C2 mole b) 1.75 ¡Á 10¨C2 mole c) 7 ¡Á 10¨C5 mole d) 1.75 ¡Á 10¨C5 mole 2. Sodium oxalate may be prepared by titrating oxalic acid (C2H2O4...
Saturday, August 28, 2010 at 9:29pm by Lucinda
Adv Chem 12th grade
I'll give you the names. You figure out the rules. Rubidium fluoride copper(II) oxide (the old name is cupric oxide) ammonium oxalate.
Wednesday, December 19, 2012 at 7:34pm by DrBob222
Gen Chem
Two ways depending upon what you want in the pure state. 1. Add oxalate ions and ppt the Ca and CaC2O4. 2. Add NaOH and drive the NH3 gas off.
Sunday, April 11, 2010 at 3:05pm by DrBob222
Chemistry
A 1.00-L solution saturated at 25°C with calcium oxalate (CaC2O4) contains 0.0061 g of CaC2O4. The solubility constant (Ksp) for this salt is [CaC2O4=128.09 g/mol]
Monday, April 16, 2012 at 9:55pm by Anne
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?).
Sunday, April 8, 2012 at 9:42pm by mike
chem
https://eee.uci.edu/programs/gchem/05MANanalysisfe.pdf I am wondering if you read the experiment. You are dealing with oxalate compounds, permanganate compounds, ethanol, acetone, and concentrated sulfuric acids.
Sunday, August 10, 2008 at 5:27pm by bobpursley
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?
Monday, January 31, 2011 at 9:28am by Jenny
College Chemistry
A 1.00-L solution saturated at 25°C with calcium oxalate (CaC2O4) contains 0.0061 g of CaC2O4. The solubility constant (Ksp) for this salt is [CaC2O4=128.09 g/mol]
Monday, December 6, 2010 at 12:23pm by Patrice
college
Look at the possible products: calcium citrate, calcium oxalate, and calcium tartrate. Are any of those insoluble in water? If so, a precipitate is formed. One of them is a problem in my making homemade wines.
Saturday, November 7, 2009 at 5:40am by bobpursley
Chemistry
If this is the only data you have (I posted to similar question but it had redox equations with it), then I would convert 4.0 g of the first salt to grams of the second. 4.0 x (molarmass second salt/molarmass first salt) = grams second salt. This is the theoretical yield. I ...
Tuesday, November 16, 2010 at 10:28pm by DrBob222
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.
Wednesday, November 21, 2012 at 2:52pm by amanda78
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.)
Wednesday, December 19, 2012 at 7:34pm by Taylor
chemistry
citrate ion oxalate ion monohydrogen phosphate ion phenolate ion. To find the formula for the ion, look up the acid and take a H off and add negative charge.
Monday, November 8, 2010 at 12:03am by DrBob222
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.
Saturday, June 23, 2012 at 12:49pm 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?
Monday, August 6, 2012 at 1:11pm by promise
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
Monday, November 2, 2009 at 1:39pm by rasuka_geo
chemistry
I don't know what the first paragraph has to do with the other two. Yes, permanganate and oxalate can be titrated but it is extremely slow at the beginning. Mn^2+ seems to catalyze the reaction so the reaction is much faster after some Mn^2+ have been formed.
Tuesday, June 26, 2012 at 10:52am by DrBbo222
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
Saturday, October 6, 2012 at 3:29pm by Karamu
chemistry redox titration
Write the equation and balance it. mols C2O4^2- = M x L = ? Using the coefficients in the balanced equation, convert mols oxalate to mols permanganate. Then M MnO4^- = mols/L. You know M and mols, solve for L.
Sunday, April 8, 2012 at 9:33pm by DrBob222
College Chemistry
a 1.00-L solution saturated at 25°C 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
Thursday, December 2, 2010 at 12:25pm by Shanice
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.]
Tuesday, February 22, 2011 at 9:43pm by sarah
chem
yes Fe(NH4)2(SO4)2 is the ferrous ammonium sulfate. here is the procedure, if you can try to figure it out that'll be great thank you! 1. prepare and label the following solutions: a.10g of ferrous ammonium sulfate dissolved in 30mL of water containing 2 drops of 6M H2SO4 ...
Friday, February 13, 2009 at 9:22pm by Natash
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.
Thursday, September 4, 2008 at 8:37pm by George
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
Friday, October 9, 2009 at 12:50am by Sindy
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.
Saturday, June 23, 2012 at 1:03pm by mary
Chemistry
You didn't provide enough information in your previous post to write a balanced equation which is why I wrote the solution in generic terms instead of specific terms. The post simply states that excess oxalate was used........and the iron complex. Please provide details on...
Monday, November 2, 2009 at 5:24pm by DrBob222
Chemistry :P
First, this is far to much writing, like a chapter or two. But to get you started, name the cation (positive ion) first and the anion (negative ion) next. Ag3PO4 is silver phosphate. How did I know that was phosphate. Here are a list of anions to MEMORIZE. http://www.woodrow....
Wednesday, November 16, 2011 at 8:48pm by DrBob222
For Further Reading
