Fe(OH)3 <--> Fe3 + 3OH a) Write the appropriate equilibrium expression for the reaction. b) If...
Fe(OH)3 <--> Fe3 + 3OH
a) Write the appropriate equilibrium expression for the reaction.
b) If the equilibrium constant for this expression is 6 X 10^(-38), what is the concentration of iron in a solution at equilibrium with Fe(OH)3 (s). Assume no other sources if iron exist.
Homework Answers
Answers: a) Equilibrium expression is [Fe^3+][OH-]
b) Concentration of iron in solution is 4.5x10^-10 M.
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Fe(OH)3 <--> Fe3 + 3OH
a) Write the appropriate equilibrium expression for the
reaction.
b) If...
Problem 4 (30 pts) Ignore activity corrections. Fe3+ + OH = Fe(OH)2+ Fe3+ + 2OH =...
Problem 4 (30 pts) Ignore activity corrections. Fe3+ + OH = Fe(OH)2+ Fe3+ + 2OH = Fe(OH)2+ Fe3+ + 3OH = Fe(OH)3(aq) Fe3+ + 40H = Fe(OH)4 Fe(OH)3°(s) = Fe3+ + 3OH log K10H = log B20H = log B3OH = log B4OH = log Ksp = 11.81 22.4 30.2 34.4 -38.8 a. (10 pts) Will Fe(OH)3'(s) precipitate in a solution prepared in water and with Fer = 1.00 mM and buffered to pH 7.0? Hint: There are several ways...
Write the equilibrium-constant expression for the reaction shown in terms of [NO], [0, 1, and [NO,...
Write the equilibrium-constant expression for the reaction shown in terms of [NO], [0, 1, and [NO, J. 2 NO(g) + O2(g) = 2 NO, (g) Ke, which is sometimes symbolized as Kor Key, denotes that the equilibrium constant is expressed using molar concentrations. For this question, Kmeans the same thing as K and Ke. K. = [C] [D]2 [4][B] At 25 °C, only 0.0670 mol of the generic salt AB, is soluble in 1.00 L of water. What is the...
Write the expression for the equilibrium constant for the following reaction, Fe+3 (aq) + SCN- (aq)...
Write the expression for the equilibrium constant for the following reaction, Fe+3 (aq) + SCN- (aq) ↔ Fe(SCN) +2 (aq) The slope of the calibration curve of [Fe(SCN)+2] vs absorbance is 3.5 x 104 M-1. Given that the absorbance of the solution prepared using 5.0 mL from 0.002 M Fe+3 and 3.0 mL from 0.002 SCN- is 0.422. Calculate the equilibrium constant for this solution.
Equilibria can be treated mathematically with the equilibrium constant, K. For the reaction Fe3+ + SCN...
Equilibria can be treated mathematically with the equilibrium
constant, K. For the reaction Fe3+ + SCN − equilibrium reaction
arrow FeSCN2+, the equilibrium constant expression is [FeSCN2+ ] K
= [Fe3+ ] · [SCN − ] where, for example, [Fe3+ ] is the molar
concentration (mol Fe3+ / L solution) present in an equilibrium
mixture. At some temperature, a chemist found the following
equilibrium concentrations. [Fe3+ ] = 8.17 ✕ 10−3 M, [SCN − ] =
8.60 ✕ 10−3 M,...
a. What is the equilibrium constant expression for the reaction: 3 Fe (s) + 4 H2O...
a. What is the equilibrium constant expression for the reaction: 3 Fe (s) + 4 H2O (g) + Fe3O4 (s) + 4 H2 (g) b. The equilibrium constant, Kc, for the reaction 2 NOCI (9) ++ 2 NO (g) + Cl2 (g) is 2.4 x 10-7. What is the Kc for the reaction: 1/3 Cl2 (g) + 2/3 NO (g) ++2/3 NOCI (g)
Question 10 1 Point What is the Ksp expression for the dissociation of Fe(OH)3 ? Select...
Question 10 1 Point What is the Ksp expression for the dissociation of Fe(OH)3 ? Select the correct answer Ksp = [Fe3+] x [OH-]3 Ksp = [Fe3+] x [OH-]3 / [Fe(OH)3] Ksp = [Fe3+] x 3 [OH-] / [Fe(OH)3] Ksp = [Fe3+] x [OH-] / [Fe(OH)3]
a. Choose the expression for the thermodynamic equilibrium constant for the following reaction: CO(g) 2H2 (g)-CH3...
a. Choose the expression for the thermodynamic equilibrium constant for the following reaction: CO(g) 2H2 (g)-CH3 OH(g) Рсн,он Pco P Pco PH K K ок -к, Рсн,он K K, PcH, OH 1 K K,= Pco PH b. Choose the expression for the thermodynamic equilibrium constant for the following reaction: Fe (aq)+30H (aq) Fe(OH)3 (s) Fe(OH)s] K=Ksp Fe OH 1 3+ Ок- Fe OH Ksp 3+ OK K.,= [Fe [OH 3+ Fe(OH)s Fe OH1 1 K= КР c. Choose the expression...
Equation given in lab manual Fe(C2O4)y-x + 3OH - ---> Fe(OH)3 + yC2O4-2 1. Moles of...
Equation given in lab manual Fe(C2O4)y-x + 3OH - ---> Fe(OH)3 + yC2O4-2 1. Moles of NaOh used to complete the reaction 2. Moles of iron(III) oxalate reacted 3. Moles of Fe+3 reacted 4. Grams of Fe+3 reacted 5. Percentage of Fe+3 in the KxFe(C2O4)y * zH2O green salt complex 6. Calculate the actual percentage of Fe+3 in K3(C2O4)3 * 3H2O 7. Percent error? Data: Mass of crystals 0.177g 40ml of distilled water used to dissolve the crystals Total volume...
8. a) Write the balanced chemical equation for the solubility equilibrium of Fe(OH)3(s). (1 mark) Click...
8. a) Write the balanced chemical equation for the solubility equilibrium of Fe(OH)3(s). (1 mark) Click or tap here to enter text. b) Show why a solid formed when [Fe3+] = 1.0 x 10-4M and [OH-] = 1.0 x 10-M? Use values of Q and K to help illustrate. (3 marks) Click or tap here to enter text. c) What would be the effect of adding NaOH(aq) to this equilibrium? Explain in terms of LeChatelier's Principle how the equilibrium would...
A student mixes 5.12 mL of 4.02 x 10 M Fe(NO3)3 with 4.88 mL 2.01 x...
A student mixes 5.12 mL of 4.02 x 10 M Fe(NO3)3 with 4.88 mL 2.01 x 103 M KSCN. She finds that in the equilibrium mixture the concentration of FeSCN2 is 1.40 x 10 M. 1. What is the initial concentration in solution of the Fe3 and SCN'? What is the equilibrium constant for the reaction? What happened to the K' and the NO3 ions in this solution? a. b. C.
A student mixes 5.12 mL of 4.02 x 10...
Problem 4 (30 pts) Ignore activity corrections. Fe3+ + OH = Fe(OH)2+ Fe3+ + 2OH = Fe(OH)2+ Fe3+ + 3OH = Fe(OH)3(aq) Fe3+ + 40H = Fe(OH)4 Fe(OH)3°(s) = Fe3+ + 3OH log K10H = log B20H = log B3OH = log B4OH = log Ksp = 11.81 22.4 30.2 34.4 -38.8 a. (10 pts) Will Fe(OH)3'(s) precipitate in a solution prepared in water and with Fer = 1.00 mM and buffered to pH 7.0? Hint: There are several ways...
Write the equilibrium-constant expression for the reaction shown in terms of [NO], [0, 1, and [NO, J. 2 NO(g) + O2(g) = 2 NO, (g) Ke, which is sometimes symbolized as Kor Key, denotes that the equilibrium constant is expressed using molar concentrations. For this question, Kmeans the same thing as K and Ke. K. = [C] [D]2 [4][B] At 25 °C, only 0.0670 mol of the generic salt AB, is soluble in 1.00 L of water. What is the...
Equilibria can be treated mathematically with the equilibrium
constant, K. For the reaction Fe3+ + SCN − equilibrium reaction
arrow FeSCN2+, the equilibrium constant expression is [FeSCN2+ ] K
= [Fe3+ ] · [SCN − ] where, for example, [Fe3+ ] is the molar
concentration (mol Fe3+ / L solution) present in an equilibrium
mixture. At some temperature, a chemist found the following
equilibrium concentrations. [Fe3+ ] = 8.17 ✕ 10−3 M, [SCN − ] =
8.60 ✕ 10−3 M,...
a. What is the equilibrium constant expression for the reaction: 3 Fe (s) + 4 H2O (g) + Fe3O4 (s) + 4 H2 (g) b. The equilibrium constant, Kc, for the reaction 2 NOCI (9) ++ 2 NO (g) + Cl2 (g) is 2.4 x 10-7. What is the Kc for the reaction: 1/3 Cl2 (g) + 2/3 NO (g) ++2/3 NOCI (g)
a. Choose the expression for the thermodynamic equilibrium constant for the following reaction: CO(g) 2H2 (g)-CH3 OH(g) Рсн,он Pco P Pco PH K K ок -к, Рсн,он K K, PcH, OH 1 K K,= Pco PH b. Choose the expression for the thermodynamic equilibrium constant for the following reaction: Fe (aq)+30H (aq) Fe(OH)3 (s) Fe(OH)s] K=Ksp Fe OH 1 3+ Ок- Fe OH Ksp 3+ OK K.,= [Fe [OH 3+ Fe(OH)s Fe OH1 1 K= КР c. Choose the expression...
8. a) Write the balanced chemical equation for the solubility equilibrium of Fe(OH)3(s). (1 mark) Click or tap here to enter text. b) Show why a solid formed when [Fe3+] = 1.0 x 10-4M and [OH-] = 1.0 x 10-M? Use values of Q and K to help illustrate. (3 marks) Click or tap here to enter text. c) What would be the effect of adding NaOH(aq) to this equilibrium? Explain in terms of LeChatelier's Principle how the equilibrium would...
A student mixes 5.12 mL of 4.02 x 10 M Fe(NO3)3 with 4.88 mL 2.01 x 103 M KSCN. She finds that in the equilibrium mixture the concentration of FeSCN2 is 1.40 x 10 M. 1. What is the initial concentration in solution of the Fe3 and SCN'? What is the equilibrium constant for the reaction? What happened to the K' and the NO3 ions in this solution? a. b. C.
A student mixes 5.12 mL of 4.02 x 10...
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