Calculate the concentration of iron in the sample in parts per million.

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: A2.880 g sample contain thiourea (NH,)2CS (76.12 g/mol) was extracted into a dilute H,SO, solution…

A:

Q: A 0.7352g sample of ore containing Fe3+, Al3+ and Sr2+ was dissolved and made up to 500.00 mL. The…

A: Given: mass of ore = 0.7352 g Concentration of EDTA = 0.02145 mol/L At pH = 1.0, the volume of EDTA…

Q: A 100.0-mL sample of spring water was treated to convert any iron present to Fe2*. Addition of…

A: Balanced equation of the reaction between Fe2+ and Cr2O72- indicates 6 moles of Fe2+ combines with 1…

Q: In the determination of iron in limonite, 0.5166 g of mineral is dissolved in acid and Fe2 + is…

A: Amount of limonite = 0.5166 g 42 96 ml of 0.0213 M Na2Cr2O4 is added in the titration. Molar mass of…

Q: A 0.9352g sample of ore containing Fe³+, Al³+ and Sr²+ was dissolved and made up to 500.00 mL. The…

A: A numerical problem based on concentration terms that is to be accomplished.

Q: What is the purity of the limestone in terms of %w/w CaCO3?

A: Initial number of moles of hydrochloric acid can be determined as follows: Number of moles  =…

Q: An unknown solution containing 25.00 mL of Ni2* in dilute HCI is treated with a known excess of…

A: Introduction :  This question is basically based on back titration concept . Given :  Molarity of…

Q: A 1.000-g sample containing KHC204, H2C204, and impurities required 38.22 mL of 0.1000 M NaOH for…

A: The answer is 1.582 m moles of KHC2O4

Q: Iron was analyzed by dissolving 1.1324 g sample in concentrated HCL. The solution was diluted in…

A: Given: Mass of iron sample = 1.1324 g Mass of Fe2O3 produced = 0.5394 g

Q: A 0.4334 g sample of canned tuna was analyzed by the Kjeldahl method; 24.61 mlLof 0.1180 M HCI were…

A:

Q: Iron was analyzed by dissolving 1.1324 g sample in concentrated HCL. The solution was diluted in…

A:

Q: a. A 0.3108-g sample of primary-standard-grade Na2 C2O4 was dissolved in H2SO4 and titrated with…

A:

Q: The active ingredient in Antabuse, a drug used for the treatment of chronic alcoholism, is…

A:

Q: The amount of Fe (55.85g/mole)in a 16.9776-g sample of an ore was determined by a redox titration…

A:

Q: Iron was analyzed by dissolving 1.1324 g sample in concentrated HCL. The solution was diluted in…

A: The question is based on the concept of mass percentage.   amount of substance present in hundred…

Q: The iron content of a large lump of ore is determined by taking a single small sample, dissolving it…

A: A random error is a discrepancy that occurs by chance between the observed and actual values of…

Q: 0.500 g of an impure ammonium sulfate sample is dissolved in water and treated with an excess of…

A: The reaction that takes place is following: (NH4)2SO4 + 2NaOH --> NH4OH + Na2SO4. Ammonium…

Q: Write the cell notation of the potentiometric set-up with SCE as the reference electrode.   b)…

A: a) Anode II Cathode AgIAg+ IIHg2 cl2 IHg. cl-Anode 2Ag→2Ag+ +2e-CathodeHg2 cl2 +2e- →Hg+2cl- Solving…

Q: An ore containing Fe3O4 was analyzed by dissolving a 1.5419-g sample in concentrated HCl. HNO3 was…

A: Given:  Amount of ore taken as Sample = 1.5419 gram Amount of Fe2O3formed= 0.8525 gram We know,…

Q: A 100.0-mL sample of spring water was treated to convert any iron present to Fe. Addition of…

A: Using back titration data we can calculate the concentration of K2Cr2O7 from that we can figure out…

Q: A 0.4140-g sample of impure Na2CO3 (FW 105.99) was analyzed by the Volhard method. After adding…

A: Given that -  Mass of impure Na2CO3 = 0.4140 g  Formula weight of Na2CO3 = 105.99  Volume of AgNO3 =…

Q: A sample of copper oxide weighing 2.013 g is dissolved in acid, the pH adjusted, and excess KI…

A:

Q: A 0.4435-g sample of impure Na2CO3 (FW 105.99) was analyzed by the Volhard method. After adding…

A:

Q: A cyanide solution with a volume of 10.33 mL was treated with 22.00 mL of Ni2+ solution (containing…

A:

Q: A 0.1093-g sample of impure Na2CO3 was analyzed by the Volhard Method. After adding 50.00 mL of…

A: Answer: This question is based on stoichiometric calculation where we have convert the moles of…

Q: Balance the following in acidic solution:(a) H2 O2 + Sn2+ ⟶ H2 O + Sn4+(b) PbO2 + Hg ⟶ Hg22+ +…

A: All atoms except oxygen and hydrogen should be balanced first. In acidic conditions, the oxygen…

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: 0.4545 g CaCO3 was dissolved in HCl and the resulting solution was diluted to 0.25 L. Twenty-five mL…

A: Mass of CaCO3 = 0.4545 g Molar mass of CaCO3 = 100 g/mol Number of moles of CaCO3 = mass/molar mass…

Q: A cyanide solution with a volume of 13.72 mL was treated with 25.00 mL of Ni2+ solution(which…

A: 4CN- + Ni2+ ----> Ni(CN)42-

Q: A 3.25 g sample of an iron-containing mineral was dissolved in an acid medium and calibrated to 500…

A: This problem is based on analytical chemistry. Here we shall find the amount of Fe3+ in the sample.…

Q: the calcium in a 5.00ml serum sample is precipitated as CaC2O4 with ammonium oxalate. the filtered…

A: Number of moles of KMnO4 , n = Molarity x volume in L                                              =…

Q: (Fe): 56 g /

A: Molarity of Na2Cr2O7 = 0.0213 M Volume of Na2Cr2O7 = 42.96 mL At equivalent point,  Geq. of Fe2+  =…

Q: A silver nitrate solution contains 50.35 g of primary standard AgNO3, in 1.00 L what volume of this…

A: The mass of silver nitrate present in a one-liter solution is = 50.35 g The volume of the Na2S…

Q: Chromel is an alloy composed of nickel, iron, and chromium. A 0.6392-g sample was dissolved and…

A:

Q: An iron ore sample which weighs 1.097 g is dissolved, the iron reduced to Fe*2, and the resulting…

A:

Q: 25.00 mL of a sample containing Hg2²+ was titrated with 0.05789 M of KIO3, requiring 35.69 mL to…

A: In this question we have to calculate the concentration of Hg22+ in the sample.

Q: The Cl– content of a solution was analyzed via an EDTA titration. 2.00 g of AgNO3 was added to 25.00…

A: It is an example of back titration. In such type of titration, two titrants are present, out of…

Q: Calculate the potential of the solution in the titration of 50.0 mL 0.100 M Fe2+ in 1.00 M HClO4…

A:

Q: 5. 0.1500 g sample of chromium ore was dissolved and the chromium oxidized to chromate ion. The…

A: Answer: This question is based on the stoichiometric calculation where we have to convert the number…

Q: Balance the following Tedox reactions using the ton- electro Method. a.) cl03+cl' C12+CIO, ( in…

A: The objective of the question is to balance the given equation in ion electron method.

Q: The following concentrations are found in mixtures of ions in equilibrium with slightly soluble…

A: Given,a. CuCN :   [Cu+ ] = 1.9 x 10-10 M     [ CN- ] = 1.9 x 10-10 Mb. CaCO3sp :   [ Ca2+ ] = 5.2 x…

Q: A weighed sample of sodium nitrite was treated with 0.05 mol of ceric sulfate in solution, in…

A: The amount of reactants that react completely to form the product can be identified based on the…

Q: A 1.000-g sample containing  bromide was dissolved in sufficient water to give 100.0 mL.  A 50.00 mL…

A: The answer is attached below-:

Q: The local anaesthetic lidocaine is required by the British Pharmacopoeia to contain not less…

A: Step 1: Calculation of Pure Lidocaine ContentGiven that 0.78% of the sample is water, the content of…

Q: A 1.000-g sample containing  bromide was dissolved in sufficient water to give 100.0 mL.  A 50.00 mL…

A: To calculate the percentage of NaBr in the 1.000 g sample. It is given that Ni2+ ion produced from…