

Calculate the amount of Fe(NH4)2(SO4)2·6H2O needed to make 250mL of a 0.002M iron solution. (2 points)
Calculate the mass amount of Fe(NH4)2(SO4)2•6H2O needed to prepare 100mL 1000mg Fe/L stock solution?
5.012g of Fe(NH4)2(SO4)4. 6H2O Find the mass of K3[Fe(C2O4)3]·3H2O in g Fe(NH4)2(SO4)4. 6H2O + H2C2O4=FeC2O4(s) + H2SO4 + (NH4)2SO4 + 6H2O(l) FeC2O4 +K2C2O4 + H2O= Fe(OH)3(s) + .....etc Fe(OH)3 + H2O2 + K2C2O4=K3[Fe(C2O4)3]·3H2O + ..etc
2. (2 points) Calculate the percentage of Fe in pure iron(I) ammonium sulfate hexahydrate: (NH4)2[Fe(SO4)2]. 6 H2O.
Draw the octahedral complex for Fe(NH4)2(SO4)2•6H2O.
A solution is prepared by dissolving 0.300 g Fe(NH4)2(SO4)2*6H2O in sufficient water to produce 250.0 mL of solution. a. What is the molar concentration of Fe2+? b. What is the molar concentration of NH4+? c. What is the concentration of sulfur in mg/L?
balance Fe(NH4)2(SO4)2·6H2O + H2C2O4 + K2C2O4 + H2O2 → K6Fe(C2O4)4·4H2O + (NH4)2SO4 + H2SO4 + H2O (Hint: Remember H2O2, an oxidizing agent, was used in the synthesis, so you’ll need to do a redox balance. Start with just the iron ions, balance the reaction, and then add the full formulas.)
1.1 Accurately (using an analytical balance ONLY) weigh 1.4 g of Fe(NH4)2(SO4) 2-6H20 1.2 Dissolve in 50 mL of 4% sylturisacid in a beaker. 1.3 Transfer into a 1 L volumetric flask; adjust the volume and mix well. Note the purity of the Fe(NH4)2(SO4)2.6H20 given on the label of the container. 1.4 Transfer this solution into a 1 L glass bottle. Preparation of working iron standard solution: 1.5 Pipet 10.00 mL of the iron standard stock solution into a 500.0...
A standard solution of iron was made by weighing 0.075 g of Fe(NH4)2(SO4)2 6(H2O) in 250 mL. Aliquots of this standard solution (see below) were transferred to a 100 mL volumetric flask, pH adjusted with citrate, and reacted with hydroquinone and o-phenanthroline and diluted to volume (100 mL). The absorbance was measured in a 1.0-cm cell using a Genesys 20 Spectrophotometer at 508 nm: Aliquot of standard solution Absorbance 1.0 mL 0.079 2.0 mL 0.163 5.0 mL 0.413 10.0 mL...
What are the oxidation and reduction half reactions for: 2Fe(NH4)2(SO4)2·6H2O + 3H2C2O4 + 3K2C2O4 + H2O2 → 2K3Fe(C2O4)3·3H2O + 2(NH4)2SO4 + 2H2SO4 + 8H2O
What’s the correct formula name for Fe(NH4)2(SO4)2?