Show your solutions for answer. 2. An aqueous solution contains 9.21 g of K4Fe(CN)6 in a...
Show your solutions for answer.
2. An aqueous solution contains 9.21 g of K4Fe(CN)6 in a total of 500 mL. Express the concentration of this in terms of its molar concentration
MnO4 + 5Fe(CN)6-4 + 8H+ --------> Mn+2 + 5Fe(CN)6-3 + 4H2O
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2. An aqueous solution contains 9.21 g of
K4Fe(CN)6 in a...
Show your solutions for answer. 4. An aqueous solution contains 9.21 g of K4Fe(CN)6 in a...
Show your solutions for answer. 4. An aqueous solution contains 9.21 g of K4Fe(CN)6 in a total of 500 mL. Express the concentration of this in terms of its normality with respect to the reaction: MnO4 + 5Fe(CN)6-4 + 8H+ --------> Mn+2 + 5Fe(CN)6-3 + 4H2O
suppose you have an unknown sample containing Fe^2+, and you titrate it with KMnO4 standard solution....
suppose you have an unknown sample containing Fe^2+, and you
titrate it with KMnO4 standard solution. Calculate the percent of
Fe in your sample.
equation: MnO4- + 5Fe^2+ + 8H^+ --> Mn^2+ + 5Fe^3+ +
4H2O
Suppose you have an unknown sample containing Feat, and you titrate it with a KMnO4 standard solution. Calculate the percentage of Fe in your sample. Equation: MnO(+5Fe2+ + 8H - Mn2+ + 5Fe3+ + 4H20 Data 0.08124M 2.49g Molarity of the KMnO4 standard solution:...
What is the molar concentration of K+ in an aqueous solution that contains 793 mg/L (ppm)...
What is the molar concentration of K+ in an aqueous solution that contains 793 mg/L (ppm) of K3Fe(CN)6? Do not use scientific notation in your answer.
Solution, dilution, concentration problems: Please answer 1-5 and show all work 1. How many grams of...
Solution, dilution, concentration problems: Please answer 1-5 and show all work 1. How many grams of MgCl2 are required to prepare 200 ml of a 0.35 M solution (MW of MgCl2 = 95.2)? 2. Express the concentration of the solution in problem #1 in terms of g/liter. 3. Express the concentration of the solution in problem #1 in terms of %w/v. 4. A solution contains 160.0 g of ferrous ammonium sulfate (MW = 392.1) in 500 ml of solution. What...
18) When an aqueous solution of manganese (ll) nitrate is combined with an aqueous solution of...
18) When an aqueous solution of manganese (ll) nitrate is combined with an aqueous solution of ammonium sulfide, what should precipitate out? A) Mns B) Mn(SO3)2 C) Mn(SO4)2 D) Mn 2503 E) Mn 2504 19) If 4.89 g of ZnCl2 is dissolved in enough water to give a total volume of 500 ml, what is the molarity of the solution? A) 0.217M B) 0.0179 M C) 0.0717 M D) 1.33 M E) 0.849 M 20) What element is undergoing oxidation...
3. When Cl2(g) is added to aqueous K [Fe(CN)6], [Fe(CN).]*- is oxidized to [Fe(CN).]}-and K [Fe(CN)6]...
3. When Cl2(g) is added to aqueous K [Fe(CN)6], [Fe(CN).]*- is oxidized to [Fe(CN).]}-and K [Fe(CN)6] precipitates, as shown below. 2K [Fe(CN).] (aq) + Cl2(g) = 2K3[Fe(CN).J(8) + 2Cl(aq) a. Write the net ionic equation for the reaction and calculate its equilibrium constant (10 pts) At 25°C: [Fe(CN).]" (aq) + e[Fe(CN).]" (aq) E° = 0.356 V Cl2(9) + 2e → 2Cl(aq) E° = 1.360 V Ksp of K3 [Fe(CN)6] = 106.5 b. When 80.0 mL of 1.00 M KCN is...
(References . An aqueous solution contains 4.60 g of calcium chloride, CaCl, per liter. What is...
(References . An aqueous solution contains 4.60 g of calcium chloride, CaCl, per liter. What is the molarity of CaCl? Molarity - b. When the compound dissolves in water, the calcium ions, Ca solution? and the chloride ions, CH, in the crystal go into the solution. What is the molar concentration of each ion in the Molar concentration M Cat Molar concentration MCI Submit Answer Try Another Version Previous Next
1. (4p) In an acidic aqueous solution, Fe2+ ions are oxidized to Fe3+ ions by MnO4": 5Fe2+(aq) + MnO4 (aq) + 8H(aq) → 5...
1. (4p) In an acidic aqueous solution, Fe2+ ions are oxidized to Fe3+ ions by MnO4": 5Fe2+(aq) + MnO4 (aq) + 8H(aq) → 5Fe3+ (aq) + Mn2(aq) + 4H2O(1) In part A of the experiment, suppose that 1.067 g of Fe(NH4)2(SO4)2.6H2O(s) are placed in a 250 ml Erlenmeyer flask to which 20 mL of water and 8 mL of 3 M H2SO4(aq) are added. The solution was titrated to the end point by adding 26.89 mL of KMnO4(aq) from the...
A solution contains 20 ppm Ca+2. Express the Ca+2 concentration in the following terms: 21. A...
A solution contains 20 ppm Ca+2. Express the Ca+2 concentration
in the following terms:
21. A solution contains 20 ppm Cat2. Express the Ca+2 concentration in the following terms: a. g Cat2 in 1,000,000 mL water (mL = 0.001 L) b. g Cat2 in 100 mL water c. % Cat2 in the 100 mL water d. mg Ca 2/kg water (mg = 0.001 g = 0.000001 kg) e. molarity (M or moles Cat2/L).
3. When C12(g) is added to aqueous K4[Fe(CN).), [Fe(CN)]*- is oxidized to [Fe(CN).]>- and K:[Fe(CN)] precipitates,...
3. When C12(g) is added to aqueous K4[Fe(CN).), [Fe(CN)]*- is oxidized to [Fe(CN).]>- and K:[Fe(CN)] precipitates, as shown below. 2K.[Fe(CN),](aq) +Cl2(g) = 2Ks[Fe(CN)2](3) + 2Cl(aq) a. Write the net ionic equation for the reaction and calculate its equilibrium constant. (10 pts) At 25°C [Fe(CN).J” (aq) + € → [Fe(CN).]" (aq) E = 0.356 V Cl2(g) + 2e → 2Cl(aq) E* = 1.360 V Kup of Kj[Fe(CN).] = 106.5 Answer: b. When 80.0 mL of 1.00 M KCN is added to...
suppose you have an unknown sample containing Fe^2+, and you
titrate it with KMnO4 standard solution. Calculate the percent of
Fe in your sample.
equation: MnO4- + 5Fe^2+ + 8H^+ --> Mn^2+ + 5Fe^3+ +
4H2O
Suppose you have an unknown sample containing Feat, and you titrate it with a KMnO4 standard solution. Calculate the percentage of Fe in your sample. Equation: MnO(+5Fe2+ + 8H - Mn2+ + 5Fe3+ + 4H20 Data 0.08124M 2.49g Molarity of the KMnO4 standard solution:...
18) When an aqueous solution of manganese (ll) nitrate is combined with an aqueous solution of ammonium sulfide, what should precipitate out? A) Mns B) Mn(SO3)2 C) Mn(SO4)2 D) Mn 2503 E) Mn 2504 19) If 4.89 g of ZnCl2 is dissolved in enough water to give a total volume of 500 ml, what is the molarity of the solution? A) 0.217M B) 0.0179 M C) 0.0717 M D) 1.33 M E) 0.849 M 20) What element is undergoing oxidation...
3. When Cl2(g) is added to aqueous K [Fe(CN)6], [Fe(CN).]*- is oxidized to [Fe(CN).]}-and K [Fe(CN)6] precipitates, as shown below. 2K [Fe(CN).] (aq) + Cl2(g) = 2K3[Fe(CN).J(8) + 2Cl(aq) a. Write the net ionic equation for the reaction and calculate its equilibrium constant (10 pts) At 25°C: [Fe(CN).]" (aq) + e[Fe(CN).]" (aq) E° = 0.356 V Cl2(9) + 2e → 2Cl(aq) E° = 1.360 V Ksp of K3 [Fe(CN)6] = 106.5 b. When 80.0 mL of 1.00 M KCN is...
(References . An aqueous solution contains 4.60 g of calcium chloride, CaCl, per liter. What is the molarity of CaCl? Molarity - b. When the compound dissolves in water, the calcium ions, Ca solution? and the chloride ions, CH, in the crystal go into the solution. What is the molar concentration of each ion in the Molar concentration M Cat Molar concentration MCI Submit Answer Try Another Version Previous Next
1. (4p) In an acidic aqueous solution, Fe2+ ions are oxidized to Fe3+ ions by MnO4": 5Fe2+(aq) + MnO4 (aq) + 8H(aq) → 5Fe3+ (aq) + Mn2(aq) + 4H2O(1) In part A of the experiment, suppose that 1.067 g of Fe(NH4)2(SO4)2.6H2O(s) are placed in a 250 ml Erlenmeyer flask to which 20 mL of water and 8 mL of 3 M H2SO4(aq) are added. The solution was titrated to the end point by adding 26.89 mL of KMnO4(aq) from the...
A solution contains 20 ppm Ca+2. Express the Ca+2 concentration
in the following terms:
21. A solution contains 20 ppm Cat2. Express the Ca+2 concentration in the following terms: a. g Cat2 in 1,000,000 mL water (mL = 0.001 L) b. g Cat2 in 100 mL water c. % Cat2 in the 100 mL water d. mg Ca 2/kg water (mg = 0.001 g = 0.000001 kg) e. molarity (M or moles Cat2/L).
3. When C12(g) is added to aqueous K4[Fe(CN).), [Fe(CN)]*- is oxidized to [Fe(CN).]>- and K:[Fe(CN)] precipitates, as shown below. 2K.[Fe(CN),](aq) +Cl2(g) = 2Ks[Fe(CN)2](3) + 2Cl(aq) a. Write the net ionic equation for the reaction and calculate its equilibrium constant. (10 pts) At 25°C [Fe(CN).J” (aq) + € → [Fe(CN).]" (aq) E = 0.356 V Cl2(g) + 2e → 2Cl(aq) E* = 1.360 V Kup of Kj[Fe(CN).] = 106.5 Answer: b. When 80.0 mL of 1.00 M KCN is added to...
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