A solution containing 0.370 g the mineral Iron ( 55.84 g/mole) produced ferrate ion (Feo 4 -2 = Mw 119.81 g/mole) when titrated with 25.21 mL of 0.08 M KMNO 4? Fe + Mn04 -- FeO 4 2 + Mn *4 a) How many moles of the permanganate is required in the reaction? b) How many moles of Fe is required in the reaction? c) Hpw many moles of acid is required in the reaction?

A solution containing 0.370 g the mineral Iron ( 55.84 g/mole) produced ferrate ion (Feo 4 -2 = Mw 119.81 g/mole) when titrated with 25.21 mL of 0.08 M KMNO 4? Fe + Mn04 -- FeO 4 2 + Mn *4 a) How many moles of the permanganate is required in the reaction? b) How many moles of Fe is required in the reaction? c) Hpw many moles of acid is required in the reaction?

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter4: Reactions In Aqueous Solution

Section: Chapter Questions

Problem 78QAP: When 85.0 mL of 0.250 M Ba(OH)2 solution is added to 85.00 mL of 0.250 M Al (NO3)3 solution, a white...

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When 85.0 mL of 0.250 M Ba(OH)2 solution is added to 85.00 mL of 0.250 M Al (NO3)3 solution, a white gelatinous precipitate of Al(OH)3; is formed. Assuming 100% yield, (a) what mass (in grams) of Al(OH)3 is formed? (b) what is the molarity of each of the ions Ba2+, OH-, Al3+, NO3- in the resulting solution?
A certain local brand of "healthy" chicharon was found to contain 0.4132 g of NaCl after Fajan titration. How much sodium is present in the sample? MM NaCl-58.44 g/mol; MW Na* = 22.99 g/mol; MW CI=35.45 g/mol Cr + Ag+ AgCl(s) O 0.1626 mg O 162.6 mg 0.1054 mg O 105.4 mg →
+2 When excess Na,So, solution was added to 20.0 mL of an unknown solution containing Ca 0.0472 g of Caso, precipitated. What is the molar concentration (molarity) of Ca ion, in the unknown solution? (molar mass of CaSo, - 136.14 g/mol A) 1.36 x 10 B) 2.47 x 10 C) 2.10 x 10 D) 1.73 x 10 E) 3.83 x 10 Select one: a. 2.10 x 10 2. b. 1.73 x 10 c. 1.36 x 10 -2 d. 3.83 x 10 e. 2.47 x 10 1- Which of the following pairs of aqueous solutions would not produce a reaction when mixed? Select one: a. Cacl, and Na PO, b. AGNO, and HCI c. NaNO, and CuCl, d. Ba(OH), and HNO, e. Which of the following groups of elements is arranged correctly in order of increasing first ionization energy? Select one: a. Al < B< O
Fe3+ in 50 mL solution, which is known to contain Fe3+, was precipitated as Fe(OH)3 and after necessary procedures, it was brought to constant weight as Fe2O3. Since the weight is found to be 0.3994 g, find the Fe3+ concentration in the solution in terms of molarity. (Fe: 55.85, O: 16.00 g / mol)
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2Fe(s) + 3Cu2+(aq) 2Fe3+(aq) + 3Cu(s) a)Calculate the minimum volume of 1.16M CuSO4 solution that is required to ensure complete reaction of 1.04g of Fe.Since you do not know which reaction will be the one to occur, you must base the calculation on whichever of the equations requires more CuSO4 solution. b)To ensure that sufficient CuSO4 is used, it is common practice to add an excess.Calculate the volume of 1.16M CuSO4 needed to provide a 20% excess in this case.
Question A 25.0 mL volume of 0.0400 M phosphoric acid (H3PO4, pK1 = 2.15; pK2 = 7.20; pK3 = 12.38) was titrated with 0.0500 M tetramethylammonium hydroxide. The titration reactions between the acid and the strong base are H;PO4 + OH → H,POT +H20 H,PO, +OH" + HPO-+ H20 HPO-+OH" → Po-+H20 What is the pH of the solution after 20 mL of the titrant was added? Answer 4.68
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A 50.0 ml solution contains only Na2SO4 (MW 142.04 g/mole). If 40.0 ml of 0.25 M BaCl2 is needed to precipitate all the SO42- as BaSO4, what mass of Na2SO4 was in the original solution?
When Steel wool was added to a blue-colored CuCl2 solution, the color of the solution gradually changed from blue to yellow. At the same time, there is some red solid covering the steel wool. What is the identity of the red solid on steel wool? A) Neutral Cu metal B) an iron oxide C) Precipitate of Fe(OH)2 or Fe(OH)3 D) Cu2+ ion
Use the following balanced chemical equation to answer the below question: 2H&PO4 (aq) +3Mg(OH)2 (aq) 6H2O m + Mg3(PO4)2 (s) The titration of a 14.0 mL sample of H3PO, requires 3.51 mL of 0.400 M Mg(OH)2 to reach the equivalence point. What is the concentration of H3PO,?