To determine the amount of magnetite. Fe3O4, in an impure ore, a 1.5419 g sample is dissolved in concentrated HCl, resulting in a mixture of Fe2+ and Fe3+. After adding HNO3 to oxidize Fe2+ to Fe3+ and diluting with water, Fe3+ is precipitated as Fe(OH)3 using NH3. Filtering, rinsing and igniting the ppt provides 0.8525 g of pure Fe2O3. Calculate % Fe in the sample.

Q: 0.7120 g of iron ore was dissolved and the iron was reduced to Fe2+ with Jones's reagent. Fe(II) was…

A: Here we are required to find the % Of Fe and Fe2O3  in the 0.712 g of iron Ore. The iron present in…

Q: A sample of slag (ore tailings) from a blast furnace was analyzed to determine the SiO2 content. A…

A:

Q: 1. Balance the following reaction: Cr + O2 -> CrO3

A: Cr + O2 -> CrO3         after the balancing this equation :

Q: The following chemical equations shows the stepwise Formation Constant expression (K₁ toks) of each…

A: The stepwise formation constant of the given complex is as follows:

Q: What is the safest way to provide S2- ions in a chemical reaction? React a metal salt with thiourea…

A: Sulfides of IA group elements act as a good source of S2- ion.

Q: Please compare the solubility of ferrihydrite (Fe(OH)3) and goethite (FeOOH), with dissolution…

A:

Q: A mixture of solid chlorides was known to contain some or all of the following cations: Ag…

A: Out of the given possibility of chlorides of Ag+, Al3+, Cr3+, Ca2+ and Zn2+, only AgCl is not…

Q: Given the formation of gibbsite from dissolved aluminum:  See image 1. Balance this reaction (if…

A: Aluminium cation reacts with the hydroxide ion to form aluminium hydroxide. The reaction is given…

Q: 1. Calculate the volume of 0.0200 M KMnO4 that would be required to complete 0.20 grams of…

A: Balanced equation for the reaction between KMnO4 and K3[Al(C2O4)3] 10K3[Al(C2O4)3].3H2O + 12KMnO4…

Q: 1) List an oxidizing agent that will: a) oxidize Cu to Cu*2, without oxidizing Cu to Cu*1. b)…

A: Note: As per company policy we are supposed to attempt first three subparts only. Please repost…

Q: 6. A mixture contains at least one of the ions in the silver group (Ag*, Hg²*, Pb²*). Read the…

A: The qualitative analysis of the metal ions involves the identification of metal ions that are…

Q: Many important metals occur as sulfide, arsenide, and antimonide minerals, especially in the Sudbury…

A: Answer :-  a) Mass of NiO produced = 1.027 kg  b) Mass of PbO produced = 2.047 kg  c) Air required…

Q: To analyze the amount of iron (Fe; Mw =  55.85 g/mol) contained in an ore sample, the sample was…

A: Given in the question, Volume of EDTA = 25 ml Molarity of EDTA = 0.2922 M Total moles of EDTA =…

Q: Consider the formation of gibbsite from dissolved aluminum as depicted below: Al3+     +        OH-…

A: Chemical reaction- It consists of reactant (starting material) and products (substances formed in…

Q: 1. Sodium oxalate crystals (0.1234 g, MM=134) required 15.67 ml of KMNO, solution to titrate. Find…

A: the solution is as follows:

Q: Hard water is a problem for many residential and commercial applications. How can hard water be…

A: Several methods of water softening have emerged in an attempt to overcome the challenges posed…