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October 25, 2014

Search: Mg(IO3)2

Number of results: 99

Chemistry
Calculate the concentration of IO3 in a 9.23 mM Pb(NO3)2 solution saturated with Pb(IO3)2. The Ksp of Pb(IO3)2 is 2.5 10-13. Assume that Pb(IO3)2 is a negligible source of Pb2 compared to Pb(NO3)2.
February 20, 2014 by Sonya

chem
Calculate the concentration of IO3 in a 4.73 mM Pb(NO3)2 solution saturated with Pb(IO3)2. The Ksp of Pb(IO3)2 is 2.5 10-13. Assume that Pb(IO3)2 is a negligible source of Pb2 compared to Pb(NO3)2.
October 13, 2014 by khadra

Chemistry
A solution containing Pb2+ and a solution containing IO3- are poured together and quickly mixed. After mixing, the solution contains 0.0030 M Pb2+ and 0.040 M IO3-. Immediately Pb(IO3)2(s), which has Ksp=2.510-13, begins to precipitate. Calculate the free concentrations of Pb2...
March 5, 2012 by Tanner

Analytical Chemistry
I am trying to find moles of IO3 from Cu(IO3)2 10 ml and standardized sodium thiosulfate (Na2S2O3.5H20) .28 M. My calc is: 0.28 Moles Na2S2O3.5H20 * (2 moles of S2O3/1 mole Na2S2O3.5H20)* (2 moles of (IO3)/1 mole Cu(IO3)2= (1.12/.01 L) but that is why to high for (M) what am I...
October 11, 2010 by Max

Chemistry
What mass of KIO3 is needed to convert the copper in 0.200g of CuSO4.H2O to Cu(IO3)2? my answer is: 0.828g Cu(IO3)2 x (2*214.003 MolarM KIO3/ 413.36 MolarM Cu(IO3) = 0.857g KIO3 could you please check if i got it right
July 17, 2013 by xavier

Chemistry
Hello, I would greatly appreciate some help with the following problem, as I'm not sure how to proceed. I'm trying to find solubility (Ksp) of Cu(IO3)2 from titration experiment. The following equations were provided: Cu(IO3)2 --> Cu^2+ + 2IO3^- Ksp = [Cu^2+][IO3^-]^2 2Cu^2...
July 23, 2014 by Constantine

chemistry
OKOK I know that I have posted this question but I just don't understand the last part. 50.0 ml of a 0.0500 M solution of lead (II) nitrate is mixed with 40.0 ml of a 0.200 M solution of sodium iodate at 25C. Calculate the Pb2+ and IO3- concentrations when the mixture comes ...
May 16, 2007 by mel

chemistry check 2
I know you've read this question too many times already but I just want to make sure I did the last part (Ksp) correctly. 50.0 ml of a 0.0500 M solution of lead (II) nitrate is mixed with 40.0 ml of a 0.200 M solution of sodium iodate at 25C. Calculate the Pb2+ and IO3- ...
May 17, 2007 by mel

Chemistry
The molar solubility of Pb(IO3)2 in a 0.10 M NaIO3 solution is 2.4 10-11 mol/L. What is Ksp for Pb(IO3)2?
April 28, 2011 by Steve

chemistry
use the following data, as appropriate, to estimate the molarity of a saturated aqueous solution of Sr(IO3)2. Molarity of a saturated aqueous solution of Sr(IO3)2 Sr(IO3)2(s) delt h kJ/mol=-1019.2 delta G kJ/mol=-855.1 delta S= 234 J mol-1K-1 Sr^2+(aq) delta h= -545.8 kJ/mol ...
December 2, 2012 by Allyx3

chemistry
use the following data, as appropriate, to estimate the molarity of a saturated aqueous solution of Sr(IO3)2. Molarity of a saturated aqueous solution of Sr(IO3)2 Sr(IO3)2(s) delt h kJ/mol=-1019.2 delta G kJ/mol=-855.1 delta S= 234 J mol-1K-1 Sr^2+(aq) delta h= -545.8 kJ/mol ...
December 2, 2012 by Allyx3

Chemistry(Please check)
. Ksp for Fe(IO3)3 is 10-14. Two solutions, one being iron(III) nitrate and the other being sodium iodate, were mixed. At the instant of mixing, [Fe3+] = 10-4M and [IO3-] = 10-5M. What happens? My answer is that a precipitate forms because Qsp > Ksp. Would you agree? ...
April 9, 2012 by Hannah

chemistry (quatatative analysis)
How many grams of Ba(IO3)2 can be dissolved in 500 mL of a 0.100 M KIO3 solution at 25 oC? Use activities for this calculation. The solubility product constant for Ba(IO3)2 is 1.5710-9 at 25 oC.
March 26, 2010 by Annabelle

CHEMISTRY
Wondering If I did this correctly so far 50.0 ml of a 0.0500 M solution of lead (II) nitrate is mixed with 40.0 ml of a 0.200 M solution of sodium iodate at 25C. Calculate the Pb2+ and IO3- concentrations when the mixture comes to equilibrium. At this temperature the Ksp for ...
May 14, 2007 by Jason

Chemistry
Given these chemical reactions: Ca^(2+)(aq) + 2IO3^(-)(aq) → Ca(IO3)2(s) Ca(NO3)24H2O(s) → Ca^(2+)(aq) + 2NO3^(-)(aq) + 4H2O(l) KIO3(s) → K^(+)(aq) + IO3(-)(aq) Calculate the masses of Ca(NO3)24H2O(s) and KIO3(s) required to make 10 g of Ca(IO3)2(s). This ...
January 23, 2010 by Rodrigo

Chemistry
Using the half- reaction method, balance the redox reaction shown below. (I-)+(Br2) ---> (IO3-)+(Br-) Step 1. Break the reaction into the two half reactions. Br2 ==> Br^- I^- ==> IO3^- Step 2. I will leave the first one for you to do. The second one is done as follows...
June 13, 2007 by Aubrey

college chem
Determine the rate of consumption of I− if the initial concentration of IO3− was 0.6634 M and decreased to 0.5745 M after 0.3964 hours. Use the reaction below. IO3− + 5I− + 6H+ ↔ 3I2 + 3H2O
February 22, 2014 by hershi

chemistry
How many grams of lead(II) iodate, Pb(IO3)2 (formula weight = 557.0 g/mol), are precipitated when 3.20 102 mL of 0.285 M Pb(NO3)2(aq) are mixed with 386 mL of 0.512 M NaIO3(aq) solution? The unbalanced equation of reaction is: Pb(NO3)2(aq) + NaIO3(aq) → Pb(IO3)2(s) + ...
September 26, 2010 by Diggs

Chemistry
Thallium (I) iodate is only slightly soluble in water. Its Ksp at 25C is 3.07 x 10-6. Estimate the solubility of thallium iodate in units of grams per 100.0 ml of water. TlIO3(s) <==> Tl^+ + IO3^- Let x = molar solubility of TlIO3. The x is molar solubility of Tl^+ and ...
May 2, 2007 by Jason

Chem
At 298 K, Pb(IO3)2(s) ↔ Pb2+(aq) + 2IO3-(aq) Ksp = 2.6x 10-13 Pb2+(aq) + 2e- → Pb(s) Eo = (-0.126) V. Find the standard potential of the half-reaction: Pb(IO3)2(s) + 2e- ↔ Pb(s) + 2IO3-(aq) Eo = ? I'm really confused. Please help.
April 17, 2013 by Anonymous

chemistry
if 2.0 x 10-5 mol of sparingly soluble Cu(IO3)2 can dissolve in 2L of a very soluble NaIO3 sol'n, what is the molar concentration of the NaIO3 sol'n? (Ksp=1.4x10-5 for Cu(IO3)2)
April 7, 2010 by dawn

chemistry
if 2.0 x 10-5 mol of sparingly soluble Cu(IO3)2 can dissolve in 2L of a very soluble NaIO3 sol'n, what is the molar concentration of the NaIO3 sol'n? (Ksp=1.4x10-5 for Cu(IO3)2)
December 17, 2012 by yoyo

Chemistry(Please check)
. Ksp for Fe(IO3)3 is 10-14. Two solutions, one being iron(III) nitrate and the other being sodium iodate, were mixed. At the instant of mixing, [Fe3+] = 10-4M and [IO3-] = 10-5M. What happens? My answer is that a precipitate forms because Qsp > Ksp. Would you agree?
April 8, 2012 by Hannah

Chemistry
CONSIDER THE FOLLLOWING UNBALANCED REDOX EQUATION: IO3^-(AQ) + Al(S)-->I2(S) + A;^3+(AQ) A. WHAT IS THE OXDATION NUMBER OF IODINE IN THE IODATE ION? I GOT IO3^6(AQ)? B. WHICH SPECIES IS THE REDUCING AGENT I GOT AL^3+(AQ) C. USING THE OXIDATION AND REDUCTION HALF REACTIONS ...
November 30, 2011 by PAM

Chem2
Copper(II) iodate precipitates from iodate solution. The formula of the precipitate is CU(IO3)2. A saturated solution of this substance was made in 0.01 M KLO3. The copper concentration was found to be 0.0013 M. Determine the [IO3-] and Ksp of the substance.
October 12, 2010 by Sammie

Chemistry
0.500 mol of Ca(IO3)2 contains ------ mol of iodine, I; to supply this much iodine,----- g of calcium iodate are needed. [Iodised salt contains a trace amount of calcium iodate, Ca(IO3)2, to help prevent a thyroid condition called goitre.]
March 22, 2010 by Zakaria

chemistry
0.500 mol of Ca(IO3)2 contains(--------) mol of iodine, I; to supply this much iodine, 194.94 g of calcium iodate are needed. [Iodised salt contains a trace amount of calcium iodate, Ca(IO3)2, to help prevent a thyroid condition called goitre.]
April 3, 2010 by Zaky

DESPERATE NEED OF HELP--Chemistry, almost done
Calculating Yield--need some help finishing problem. Almost done, just need help one ONE step, please help!!? Well we did a lab on limiting reagent/reactants. The balanced equation is Sr(NO3)2 + 2KIO3 --> Sr(IO3)2 + 2KNO3 Mols of Sr(NO3)2 used was .005023 mol and Mols of ...
February 28, 2007 by Angie

Easy chem question... me=braindead, help please?
It's been so long I forget which ones are which. My balanced equation is Sr(NO3)2 + 2KIO3 --> Sr(IO3)2 + 2KNO3. It wants the total ionic and the net ionic Thanks ^^ (not just looking for answer, want explanation too please, just a short one) In aqueous solution, this would ...
March 1, 2007 by Angie

chem
I'm stuck on this one aswell... 50.0 ml of a 0.0500 M solution of lead (II) nitrate is mixed with 40.0 ml of a 0.200 M solution of sodium iodate at 25C. Calculate the Pb2+ and IO3- concentrations when the mixture comes to equilibrium. At this temperature the Ksp for lead (II...
May 2, 2007 by Ilene

A few chemistry
I got the rest of the homework, but these are confusing me so much...ugghhhh. 1. The pH of a .400 M solution of iodic acid, HlO3, is .726 at 25 degrees C. What is the Ka(acid constant) at this temperature? 2. The pH of a .150 M solution of HClO is found to be 4.55 at 25 ...
March 22, 2007 by Trish

Chemistry
Ca(IO3)2(s) ⇌ Ca^(2+)(aq) + 2IO3^(-)(aq) First, you poured 30 mL of 0.100 M Ca^(2+) solution over a 2.000 g sample of solid Ca(IO3)2 and allowed the mixture to sit for 30 minutes. Some of the solid dissolved, causing the calcium ion concentration to increase by a certain...
February 6, 2010 by John

chemistry
in balancing I3- --- I- + IO3- wat is reduced to what
April 25, 2010 by fen

chemistry
in balancing I3- --- I- + IO3- wat is reduced to what
April 25, 2010 by fen

chemistry
plot (IO3) vs. reaction Time(s)
May 9, 2012 by amine

chemistry
Have 0.02M of KIO3, what is the molaity of IO3?
June 23, 2010 by karen

AP Chemistry
Which is a stronger base in aqueous solution, IO- or IO3-? Explain.
April 26, 2010 by Lisa

Chemistry
need help to balance half reaction in basic solution IO3 to I2
July 27, 2013 by Shana

chem
what mass of KIO3 is needed to convert the copper in 0.2 g of CuSO4 5H20 to Cu(IO3)2
January 21, 2011 by midget

Science
How many moles of Io3 are present in a 100mL solution containing 1.390g of KIO3
September 28, 2011 by Chris

Chemistry
How many moles of Io3 are present in a 100mL solution containing 1.390g of KIO3
September 28, 2011 by Chris

AP Chemistry
The solubility of solid Ce(IO3)3 in a 0.20 M KIO3 solution is 4.4 10-8 mol/L. Calculate Ksp.
December 4, 2011 by Bill

Chemistry
Spilit acidic acid into half reactions CL03^- + I2 yields IO3^- + CL^-
November 10, 2010 by Anonymous

Chemistry
Balance the following equation in basic solution. Phases are optional. I{-}+IO4{-} --> I3{-}+IO3{-}
April 14, 2014 by ACDub

Chemistry
Describe how would you prepare .005M solution of IO3^-1 starting with potassium iodate KIO3
June 9, 2009 by Gweedo

Chemistry
Please check my answers. 1. Using the equations, IO3- +5I- + 6H+ -> 3I2 + 3H2O C6H8O6 + I2 -> C6H6O6 + 2I- + 2H+ how many equivalents of IO3- are required to produce enough I2 to oxidize one equivalent of ascorbic acid? Answer: 1IO3- <-> 3I2 <-> 3C6H8O6 1/3 ...
February 27, 2011 by Sara

Chem
Balance the following redox reactions in acidic solution by the half-reaction method Br(aq) + I(aq) + HClO(aq) = Br2(l) + IO3 + Cl(aq)
October 7, 2012 by James

chemistry
For the following reaction in acidic solution. Cr2O7^2- + I- ---> Cr^3+ + IO3- Give the total balanced net ionic equation.
June 17, 2013 by Annie

chemistry
balance half equations in basic solution ClO3- to ClO4- Zn to zn2+ BrO3- to Br- IO3- to I2 Sn2+ to Sn4+
July 26, 2013 by roxy

Chemistry
1. Balance the following half reactions in basic solution. ClO3- (aq) ClO4- (aq) Zn (s) Zn2+ (aq) BrO3- (aq) Br- (aq) IO3- (aq) I2 (s) Sn2+ Sn4+
July 26, 2013 by Jenny

Chemistry- please help!!
The following reaction occurs in an aqueous acid solution: no3- + I- -> IO3- + NO2 In the balanced equation, the coefficient of water is A. 4 B. 3 C. 1 D. 5 E. 2
May 23, 2010 by Charleze

Chemistry- Please Help!!
according to lechateliers principle, would increasing the starting concentration of Ca2+ increase or decrease the amount of Ca(IO3)2 that dissolves???
July 28, 2013 by Kelly

Chemistry
Cr2O72-(aq) + I-(aq) -->Cr3+(aq) + IO3-(aq) What is the oxidizing species and the reducing species?
June 17, 2013 by Jessica

chem
Ok so for question I have to state whether the element/compound is an acid, base, conjugate acid or conjugate base. Can u please tell me if i am correct and help me out with the ones i am unsure what the answer is? 1)S^2-(aq)+HCl(aq)<=>Cl^1-(aq)+HS^1-(aq) This is what I ...
January 29, 2012 by Erik

science- chemistry
what is the rate of reaction, if rate of consumption of iodide is 2.130x10^-5? 5I-(aq)+IO3-(aq)+6H+(aq)<-> 3I2(aq)+3H2O(l)
May 10, 2010 by pookie

chemistry
Balance the reaction below in acidic conditions: IO3- + I- --> I2 What volume of 0.352 M HCl is needed to produce 2.48x10-3 moles of iodine, I2, with an excess of KlO3 and Kl?
December 14, 2010 by Sarah

Chemistry lab
What happens at the molecular level once equilibrium is reached, that is once the solution is saturated with Cu(IO3)_2?
April 12, 2012 by Michael

Chemistry
Hi, I'm really having trouble this this chemistry problem. I have the answers; however I don't have extensive knowledge about titrations and I'm struggling with working it out. If anyone could suggest how to work this out (or even where to start) that would be great. Thanks! ...
August 26, 2007 by Stein

Chemistry
For the reaction IO3 + 5I + 6H+ 3I2 + 3H2O the rate of disappearance of I at a particular time and concentration is 2.8 x 10-3 M s-1. What is the rate of appearance of I2 in molarity per second?
July 31, 2012 by Greg

chemistry
For the following reaction in acidic solution. Cr2O7^2- + I- ---> Cr^3+ + IO3- give the balanced half reduction reaction. Indicate the oxidizing species.
June 17, 2013 by Annie

Chemistry
The solubility of cu(io3)2 is 1.0*10-7 what is the solubility of the salt
February 13, 2012 by Chioma

Chemistry
Balance these reactions using the half-reaction method Sn2+ + IO3- -> Sn4= + I- (acidic solution) CrO2 + ClO- -> CrO42- + Cl- (basic solution)
May 26, 2010 by Mary

Chemistry
Write half-reactions for the oxidation and reduction processes for the following: Sn2+ + IO3- -> Sn4+ + I- (acidic solution) MN2+ + H2O2 -> MnO2 + H2O (basic solution)
May 26, 2010 by Mary

Chem 1A
The following reaction occurs in aqueous acid solution: NO3 +I →IO3 +NO2 In the balanced equation, using the smallest whole-number coefficients, what is the coefficient of NO3?
November 12, 2012 by Parkin

chem
Which of the following ions contains lone pair of electrons at the central atom? A) SO4 2- B) NO3 - C) IO3 - (Is there any ways without drawing the diagrams and I could still able to figure out the answer???) Thx very much
October 2, 2014 by ivan

chemistry
Pt(s) | Mn2+(aq), MnO4-(aq), H+(aq) || H+(aq), IO3-(aq) | I2(s) | Pt(s) Pt(s) | Mn2+(aq) | MnO2(s) | H+(aq) || H+(aq) || PbO2(s) | Pb2+(aq) | Pt(s) how come the first one has comas within cell notation but not the second one,
June 3, 2010 by eng

chemistry
balance the redox equations: IO3-(aq) -> I2(aq) and I-(aq) -> I2(aq) balance the redox equation: S2O3(-2) -> S4O2(2-) and I3- -> I-
April 17, 2011 by Jake

Chemistry
Which of the following substances has the greatest solubility in water? A. Ca(OH)2, Ksp = 6.5 10-6 B. Ag2SO4, Ksp = 1.5 10-5 C. PbI2, Ksp = 7.9 10-9 D. Zn(IO3)2, Ksp = 3.9 10-6 E. BaF2, Ksp = 1.5 10-6
May 2, 2010 by Marco

chemistry
If a solution of 0.10 M silver nitrate, AgNO3, is slowly added to a solution containing 0.010 M potassium iodate, KIO3, and 0.20 M sodium bromate, NaBrO3, what precipitate will form first. Will this precipitate form nearly completely (99%) before the second precipitate starts ...
September 13, 2006 by bria

Chemistry
A student synthesized 6.895 g of barium iodate monohydrate, Ba(IO3)2*H2O by adding 30.00 mL of 5.912 x 10-1 M barium nitrate, Ba(NO3)2, to 50.00 mL of 9.004 x 10-1 M sodium Iodate, NaIO3 whats the percent yield?
June 30, 2014 by Chris

Chemistry
1.005 grams of potassium iodate is reacted with .5 grams of potassium iodide. THe net ionic reaction is shown below. IO3-+8I-+6H+-->3I3-+3H2O How many grams of the L3- are produced?
June 3, 2009 by Juggernaut

AP CHEM please help
Write the standard line notation for each cell below. IO3-(aq) + Fe2+(aq)--> Fe3+(aq) +I2(aq) ________________________________________ H2O2 + 2 H+ + 2 e- --> 2 H2O E = 1.78 V O2 + 2 H+ + 2 e- --> H2O2 E= 0.68 V ________________________________________ Mn2+ + 2 e- --&...
March 6, 2012 by Janvi

Chemestry
The solubility product of copper(II) iodate, Cu(IO3)2, is 4 x 10-9 mol3 dm-9 at 25 C. What is the solubility of copper(II) iodate in g dm-3? A 1.85 10-2 B 4.14 10-1 C 5.21 10-1 D 6.56 10
June 10, 2011 by John

chemistry
what is the molecular geometry of IO3- when the angle is 105 degrees? What is it when the molecular geometry is 120 degrees? Which angle creates the most stable structure with the highest Boltzmann Distribution? Create a lewis structure that agrees with your findings?
January 11, 2010 by bubble

Chemistry
Suppose 50.00 mL of 2.0 E -5 M Fe(NO3)3 is added to 50.00ml of 2.0 E -4M KIO3. Which of the following statements is true? For Fe(IO3)3, Ksp= 1.0 E-14 a-precipate forms because Qc<Ksp b-No precipate forms because Qc>Ksp c-Nothing happended d-No precipate forms because Qc&...
March 17, 2013 by Patrick

AP Chemistry
i'm having trouble balancing the redox reaction for the iodine clock lab. The redox reaction inovlves a hydrogen sulfite ion and iodate ion in an acidified solution. i have the final balanced equation, 5 HSO3 + 2 IO3 ---> I2 + 5SO4 + H20 + 3H but i'm having trouble figuring...
March 13, 2008 by Jake

chemistry
Using the half-reaction method, balance the redox reaction below. Show your work; partial credit will be given. I- + Br2 → IO3- + Br- Write the reduction and oxidation half-reactions. Balance them for atoms. Balance each of the half-reactions for charge. Multiply the ...
April 27, 2012 by Anonymous

Redox
We have to write the balanced redox equation for this and this is the only one im stuck on. Incase theres another way to do it, we have to do it where you write all the oxidation numbers and then find out which one is reducaed which is oxidized, then write the half reactions, ...
June 13, 2006 by Tracy

chemistry
in an experiment 5.00ml of 0.1440 mol L^1- aqueos KIO3 was reacted with an excess of aqueous iodide and the molecular iodine I2, Formed was titrated against 0.1000mol L^1- aqueous S2O3^2- the equation for the titration reaction is: I2(aq)+ 2 S2O3^2-(aq)---->S4O6^2-(aq)+ 2I...
November 17, 2011 by unknown

chemistry
I am having a ton of trouble with this lab question, I do not understand it at all. The question is: Show how the rate of reaction in reciprocal seconds was calculated for the mixture in question 1, using the class average. The mixture in question one is: 3HSO3^- + IO3^- + ...
November 21, 2010 by blue fire

CHEMISTRY
I am having a ton of trouble with this lab question, I do not understand it at all. The question is: Show how the rate of reaction in reciprocal seconds was calculated for the mixture in question 1, using the class average. The mixture in question one is: 3HSO3^- + IO3^- + ...
November 21, 2010 by blue fire

Chemistry 102
The Ksp for cerium iodate, Ce(IO3)3 is 3.2 e-10. What is the molar solubility of Ce ion in pure water? = .0019 M B) A 0.031 M sodium iodate is added as a common ion. What is the concentration of Ce ion with the common ion present? C) What is the ratio of the Ce ion with the ...
April 21, 2010 by Nick

Chemistry
Sulfite (SO3^2-) in wine was measured by the following procedure: 50.0ml of wine were added 5.00ml of solution containing (0.8043 g KIO3 + 5 g KI)/100ml. Acidification with 1.0ml of 6.0 M H2SO4 quantitatively converted IO3^- into I3^-. I3^- reacted with sulfite to generate ...
October 24, 2011 by Ken

Chemistry
When reviewing the procedure the student found that 4.912 x 10-1 M barium nitrate solution had been used instead of that in the following procedure: A student synthesized 6.895 g of barium iodate monohydrate, Ba(IO3)2*H2O by adding 30.00 mL of 5.912 x 10-1 M barium nitrate, Ba...
June 30, 2014 by Steve

Chemistry Check
Write chemical equations to represent the cathode, anode, and net cell reactions. 1) Cd | Cd(NO3)2 || Ag(NO3)2 | Ag Reduction at Cathode: Cd2+ + 2e- ---> Cd Oxidation at Anode: [Ag ---> Ag+ + e-] x2 Cd2+ + 2Ag ---> Cd + 2Ag2+ 2) Pt | IO3-,H+ || Zn2+ | Zn Reduction at ...
March 5, 2008 by Anonymous

Chemistry Check
Write chemical equations to represent the cathode, anode, and net cell reactions. 1) Cd | Cd(NO3)2 || Ag(NO3)2 | Ag Reduction at Cathode: Cd2+ + 2e- ---> Cd Oxidation at Anode: [Ag ---> Ag+ + e-] x2 Cd2+ + 2Ag ---> Cd + 2Ag2+ 2) Pt | IO3-,H+ || Zn2+ | Zn Reduction at ...
March 5, 2008 by Alex

chem
Ok so i looked at it and tried to figure out the conj. base and acid. Are these right? 1) S2-(aq) + HCl(aq) <=>Cl1-(aq) + HS1-(aq) This is what I think it is: Acid = HCl Base = S^2- Conjugate acid =HS^1- Conjugate base = Cl^1- 2) H2O2(aq) + PO43-(aq) <=>HPO42-(aq...
January 29, 2012 by Erik

Chemistry help please!!!
Experimental Procedure, Part F. A 1.0- mL volume of 0.010 M H2SO3 is added to a mixture of 12 drops of 0.01 M HIO3, 8 drops of deionized water, and 1 drop of starch solution. A color change in the reaction mixture occured in 40 seconds. a. Assuming 25 drops per milliliter, ...
January 27, 2011 by john

chemistry
Titration of Vitamin C tablets Prior to titration, Vitamin C samples were dissolved in dilute sulfuric acid, treated with a 60mL portion of 0.3 M KIO3 and excess KI. Given equations: (1) ascorbic acid + I2 + 2H2O <--> dehydroascorbic acid + 2I^- + 2H3O^+ (2) IO3^- + 5I...
November 23, 2009 by mimi--PLEASE HELP VERY CONFUSED

Chemistry
When reviewing the procedure the student found that 4.912 x 10-1 M barium nitrate solution had been used instead of that in the following procedure: A student synthesized 6.895 g of barium iodate monohydrate, Ba(IO3)2*H2O by adding 30.00 mL of 5.912 x 10-1 M barium nitrate, Ba...
July 3, 2014 by Steve

Chemistry
When reviewing the procedure the student found that 4.912 x 10-1 M barium nitrate solution had been used instead of that in the following procedure: A student synthesized 6.895 g of barium iodate monohydrate, Ba(IO3)2*H2O by adding 30.00 mL of 5.912 x 10-1 M barium nitrate, Ba...
July 3, 2014 by Steve

chemistry
a student synthesized 6.895g of barium iodate monohydrate, Ba(IO3)2.H2O, by adding 30.00 mL of 5.912*10^-1M barium nitrate, Ba(NO3), to 50.00 mL of 9,004*10^-1 M sodium iodate, NaIO3 (1) write the chemical equation for the reaction of solutions of barium nitrate and sodium ...
March 1, 2010 by aymal

Chemistry
Hi DrBob, Sorry about that, I wasn't very clear! Can someone please help me complete these calculations for my lab; I am having some trouble. A. Standardization of Na2S2O3 -Mass of KIO3 in 100mL = 0.09600g -Calculate Molarity of KIO3= ? Please check: 0.09600g/(214.0g/mol)=4....
March 6, 2011 by Bryant

Chemistry - DrBob222 please check and help
Can you check these? And I need help on one. Oxidation Number Method of Balancing Redox Reactions 1)Neutral Solution Sn^2+ + Fe^3+ ----> Fe^2+ + Sn^4+ Balanced equation Sn^2+ + 2Fe^3+ ----> 2Fe^2+ + Sn^4+ 2)Acidic Solution Fe^2+ + Cr2O7^2- ---> Cr^3+ + Fe^3+ Balanced ...
February 21, 2008 by Alex

Chemistry - DrBob222 please check and help
Can you check these? And I need help on one. Oxidation Number Method of Balancing Redox Reactions 1)Neutral Solution Sn^2+ + Fe^3+ ----> Fe^2+ + Sn^4+ Balanced equation Sn^2+ + 2Fe^3+ ----> 2Fe^2+ + Sn^4+ 2)Acidic Solution Fe^2+ + Cr2O7^2- ---> Cr^3+ + Fe^3+ Balanced ...
February 21, 2008 by Alex

CHemistry Please Help..............LAB
Standardization of the Sodium Thiosulfate Solution Make up a standard solution of potassium iodate by accurately weighing by difference about 0.1 g of KIO3 and placing it in your 100 mL volumetric flask. Fill the flask to mark with distilled water. Potassium iodate reacts ...
October 19, 2008 by Sara

CHemistry Please Help. DR. BOBB
Standardization of the Sodium Thiosulfate Solution Make up a standard solution of potassium iodate by accurately weighing by difference about 0.1 g of KIO3 and placing it in your 100 mL volumetric flask. Fill the flask to mark with distilled water. Potassium iodate reacts ...
October 19, 2008 by Sara

DrBobb222 : Chemistry HElp...Please Check
Standardization of the Sodium Thiosulfate Solution Make up a standard solution of potassium iodate by accurately weighing by difference about 0.1 g of KIO3 and placing it in your 100 mL volumetric flask. Fill the flask to mark with distilled water. Potassium iodate reacts ...
October 21, 2008 by Sara

Chemistry: please double check...
Please double check one last time have to hand it in tomorrow.Thank-You in Advance. This was the lab experiment: ------------------------------------------- A. Standardization of the Sodium Thiosulfate Solution Make up a standard solution of potassium iodate by accurately ...
October 27, 2008 by Saira

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