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1. When iron(II) ammonium sulfate is dissolved in water, it dissociates into its component ions. ()...
BACKGROUND: Synthesis of Potassium Iron (III) Oxalate Hydrate Salt The iron(II) ions from Fe(NH4)2(SO4)2•6H2O will be precipitated as iron(II) oxalate. Fe^2+(aq) + C2O4^2-(aq) --> FeC2O4 (s) The su...
BACKGROUND: Synthesis of Potassium Iron
(III) Oxalate Hydrate Salt
The iron(II) ions from
Fe(NH4)2(SO4)2•6H2O
will be precipitated as iron(II) oxalate.
Fe^2+(aq) + C2O4^2-(aq) --> FeC2O4 (s)
The supernatant liquid, containing the ammonium and sulfate
ions, as well as excess oxalate ions and oxalic acid will be
decanted and discarded. The solid will then be re-dissolved and the
iron(II) ions will be oxidized to iron(III) ions by reaction with
hydrogen peroxide.
2Fe^2+(aq) + H2O2(aq) --> 2Fe^3+(aq) +2 OH^ - (aq)
The...
The excess hydroxide ions must be neutralized with oxalic acid. The oxalic acid will also neutralize...
The excess hydroxide ions must be neutralized with oxalic acid. The oxalic acid will also neutralize the hydroxide ions of the iron (III) hydroxide precipitate, releasing the iron(III) ion back into solution. Oxalic acid is chosen so that no additional anions will be present to interfere with the formation of the complex. The excess oxalate ions convert all iron present into a soluble complex ion with three oxalate ions attached to the iron(III) ion. Fe(OH)3 (s) + (aq) → _()...
1. write out the ion formulas for the components of iron (ii) ammonium sulfate and show...
1. write out the ion formulas for the components of iron (ii) ammonium sulfate and show the overall formula and how the charges are balanced. 2. write out the formulas for the ions and water components of potassium trisoxalatoiron (iii) trihydrate and show overall formula has the charges balanced.
20) When solutions copper(II) sulti AC utions of sodium sulfide and copper(II) sulfate are mixed, a...
20) When solutions copper(II) sulti AC utions of sodium sulfide and copper(II) sulfate are mixed, a precipitate of of (11) sulfide is formed. What is the net ionic equation for this reaction? i Cu²+ (aq) + S2-(ag) Curs) + S B) Na2S(aq) + CuSO4(aq) + CuS(s) C) 2Na+ (aq) + (aq) + Cu2+ (aq) + SO42-ag) 2Nat(ag) + SO42-lag) D) Na2S(aq) + CuSO4(aq) - Na2SO4(aq) + Cu(s) E) Cu2+ (aq) + 52-ag) - CuS(s) 40) 41 Choose the best classification...
used to titrate a solution of iron(II) ions., with which it reacts according to Cerium(IV) sulfate...
used to titrate a solution of iron(II) ions., with which it reacts according to Cerium(IV) sulfate Ce4(aq)Fe2 (aq)>Ce3*(aq) + Fe3 (aq) A cerium(IV) sulfate solution is prepared by dissolving 40.47 g of Ce(SO42 in water and diluting to a total volume of 1.000 L. A total of 19.41 mL of this solution is required to reach the endpoint in a titration of a 100.0-mL sample containing Fe(aq). Determine the concentration of Fe2 in the original solution It is desired precipitate,...
The formate ion, (CHO2-), is related to the acetate ion and forms ionic salts with many...
The formate ion, (CHO2-), is related to the acetate ion and forms ionic salts with many metal ions. Assume that 11.874 g of M(CHO2)2 (where M represents the atomic symbol for a particular metal) are dissolved in water. When a solution of 0.300 M sodium sulfate is added, a white precipitate forms. The sodium sulfate solution is added until no more precipitate forms, then a few excess milliliters are added. The precipitate is filtered, washed, and dried. It has a...
5. Let a square represent an ammonium ion and a circle represent a sulfate ion. Which...
5. Let a square represent an ammonium ion and a circle represent a sulfate ion. Which of the following depicts a small representative volume of a 0.10 M aqueous solution of ammonium sulfate? Water molecules have not been included. For each incorrect answer, state why it is incorrect; be as specific as possible. A в C о ‑ G F None of B these O ODO epresents an ato At 25°C in a 50 mL Erlenmeyer flask were combined 1.050...
1. Write a balanced chemical equation for the oxidation of zinc metal (Zn) by copper(II) ions...
1. Write a balanced chemical equation for the oxidation of zinc metal (Zn) by copper(II) ions (Cu?") in a copper sulfate solution. Note that copper(II) sulfate completely dissociates in aqueous solution and forms Cu2+ (aq) and SO,- (aq) in water. Zinc metal is a solid and should be represented as Zn (3) Write a chemical equation for the decomposition of limestone (CaCO,) by heating to high temperature to drive off carbon dioxide. The other product of this decomposition reaction is...
1. When 18.0 mL of a 6.04×10-4 M manganese(II) sulfate solution is combined with 15.0 mL...
1. When 18.0 mL of a 6.04×10-4 M manganese(II) sulfate solution is combined with 15.0 mL of a 1.39×10-4 M ammonium sulfide solution does a precipitate form? (yes or no)___ For these conditions the Reaction Quotient, Q, is equal to ._____ 2. Solid sodium phosphate is slowly added to 50.0 mL of a 0.0357 M calcium acetate solution. The concentration of phosphate ion required to just initiate precipitation is____ M. 3. Solid ammonium chromate is slowly added to 75.0 mL...
4.30. Using solubility rules, predict the solubility in water of the following ionic compounds. a. AI(OH) b. CaN...
4.30. Using solubility rules, predict the solubility in water of the following ionic compounds. a. AI(OH) b. CaN C. NH4CI d. KOH 4.32. Using solubility rules, decide whether the following ionic solids are soluble or insoluble in water. If they are soluble, write the chemical equation for dissolving in water and indicate what ions you would expect to be present in solution. (NE SO b. BaCO c. Pb(NOs)2 d. Ca(OH) 4.34. Write net ionic equations for the following molecular equations....
BACKGROUND: Synthesis of Potassium Iron
(III) Oxalate Hydrate Salt
The iron(II) ions from
Fe(NH4)2(SO4)2•6H2O
will be precipitated as iron(II) oxalate.
Fe^2+(aq) + C2O4^2-(aq) --> FeC2O4 (s)
The supernatant liquid, containing the ammonium and sulfate
ions, as well as excess oxalate ions and oxalic acid will be
decanted and discarded. The solid will then be re-dissolved and the
iron(II) ions will be oxidized to iron(III) ions by reaction with
hydrogen peroxide.
2Fe^2+(aq) + H2O2(aq) --> 2Fe^3+(aq) +2 OH^ - (aq)
The...
The excess hydroxide ions must be neutralized with oxalic acid. The oxalic acid will also neutralize the hydroxide ions of the iron (III) hydroxide precipitate, releasing the iron(III) ion back into solution. Oxalic acid is chosen so that no additional anions will be present to interfere with the formation of the complex. The excess oxalate ions convert all iron present into a soluble complex ion with three oxalate ions attached to the iron(III) ion. Fe(OH)3 (s) + (aq) → _()...
20) When solutions copper(II) sulti AC utions of sodium sulfide and copper(II) sulfate are mixed, a precipitate of of (11) sulfide is formed. What is the net ionic equation for this reaction? i Cu²+ (aq) + S2-(ag) Curs) + S B) Na2S(aq) + CuSO4(aq) + CuS(s) C) 2Na+ (aq) + (aq) + Cu2+ (aq) + SO42-ag) 2Nat(ag) + SO42-lag) D) Na2S(aq) + CuSO4(aq) - Na2SO4(aq) + Cu(s) E) Cu2+ (aq) + 52-ag) - CuS(s) 40) 41 Choose the best classification...
used to titrate a solution of iron(II) ions., with which it reacts according to Cerium(IV) sulfate Ce4(aq)Fe2 (aq)>Ce3*(aq) + Fe3 (aq) A cerium(IV) sulfate solution is prepared by dissolving 40.47 g of Ce(SO42 in water and diluting to a total volume of 1.000 L. A total of 19.41 mL of this solution is required to reach the endpoint in a titration of a 100.0-mL sample containing Fe(aq). Determine the concentration of Fe2 in the original solution It is desired precipitate,...
5. Let a square represent an ammonium ion and a circle represent a sulfate ion. Which of the following depicts a small representative volume of a 0.10 M aqueous solution of ammonium sulfate? Water molecules have not been included. For each incorrect answer, state why it is incorrect; be as specific as possible. A в C о ‑ G F None of B these O ODO epresents an ato At 25°C in a 50 mL Erlenmeyer flask were combined 1.050...
1. Write a balanced chemical equation for the oxidation of zinc metal (Zn) by copper(II) ions (Cu?") in a copper sulfate solution. Note that copper(II) sulfate completely dissociates in aqueous solution and forms Cu2+ (aq) and SO,- (aq) in water. Zinc metal is a solid and should be represented as Zn (3) Write a chemical equation for the decomposition of limestone (CaCO,) by heating to high temperature to drive off carbon dioxide. The other product of this decomposition reaction is...
4.30. Using solubility rules, predict the solubility in water of the following ionic compounds. a. AI(OH) b. CaN C. NH4CI d. KOH 4.32. Using solubility rules, decide whether the following ionic solids are soluble or insoluble in water. If they are soluble, write the chemical equation for dissolving in water and indicate what ions you would expect to be present in solution. (NE SO b. BaCO c. Pb(NOs)2 d. Ca(OH) 4.34. Write net ionic equations for the following molecular equations....
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