What should be color of your solution before the end point in the determination of magnesium using EDTA and calmagite indicator? White Pink Blue O Red
Q: 7. Calculate [Fe³*] in the solution prepared in step 12 of the procedure.
A: Since you have posted multiple questions as per guidelines we can solve only one per session . If…
Q: True or false: Iron in the +2 oxidation state could create octahedral complexes True or False: Salt…
A: Given statements are : 1.Iron in the +2 oxidation state could create octahedral complexes 2. Salt…
Q: What is the % of Cr in a sample of chrome-iron ore
A:
Q: Draw the structure of (a) Cis-dichloridotetracyanochromate (II) ion (b)…
A: To find: The structure of the given compounds
Q: Why is the froth flotation method selected for the concentration of sulphide ores?
A: Froth floatation process: This process helps to remove gangue from sulphide ores. The principle…
Q: On adding sodium hydroxide solution to aluminum salt solution is formed ........ a. A gelatinous…
A: Given statement is : On adding sodium hydroxide solution to aluminum salt solution,…
Q: In hydride-generation technique: which of the .9 ?following is incorrect there is no flame in this…
A: Given: The given statements about hydride-generation technique are, There is no flame in this…
Q: Preparation for the copper (1)chloride Does the colour of the CuCl remain the same if you leave it…
A:
Q: (a) What is the percentage of MnO2 in a pyrolusite ore if a sample weighing 0.4000 g is treated with…
A: What is the percentage of MnO2 in a pyrolusite ore if a sample weighing 0.4000 g is treated with a…
Q: In which of the below reactions is metal sulfide dissolution more energetically favorable? MnS + H+…
A: The given reactions are : MnS + H+ <--> Mn2+ + HS- CuS + H+ <-->Cu2+ + HS-
Q: i) ii) Which metals is classified as a Group 2 cations? What is the selective reagent for Group 2…
A: In this question, we have to find out the correct answer of given problem by the help of the…
Q: Formation of a red color upon addition of KSCN confirms the presence of which metal: aluminum,…
A: Formation of a red color upon addition of KSCN confirms the presence of iron metal.
Q: 25.00 mL 0.01000 M Ni2+ is titrated with 0.01000 M EDTA in a solution buffered to pH 5.0. Given that…
A: EDTA, or ethylenediaminetetraacetic acid, is a popular chelating agent that’s used in food, as a…
Q: What allows magnesium to substitute freely for iron in olivine?
A: Olivine Olivine comes under the category of silicates. It is the rock forming mineral with formula…
Q: When Mn2+ is mixed with sodium bismuthate, what reaction occurs?
A: The reaction is as follows:
Q: In the iron(II)-silver ion system performed in the experiment, all of the following successfully…
A: Option-1 is not correct. When HCl was added to the iron (II)-silver ion system, a white AgCl…
Q: Calculate the saturation indices of this solution. Then classify as: undersaturated,…
A: Solution - According to the question - Given - Siderite (FeCO3) [Fe2+] = 3 mM; [CO32-] = 10 mM KSP…
Q: The equilibrium constant for the disproportionation copper(I) shown below is 1.81 x 106. If the…
A: The reaction for the disproportionation of Cu+ is given as;
Q: Uses and applications of carbonatotetraaminecobalt(iii)nitrate
A: carbonatotetraaminecobalt(iii)nitrate is a co-ordination compound of cobalt (III). It under goes…
Q: explain why the formation constant of [Fe(bpy)3]^2+ from [Fe(H2O)6]^2+ might be expected to be…
A: bpy is bipyridine is a bidentate ligand, whereas NH3 and H2O are mono dentate. Formation constant…
Q: Redox Titration Curve Consider the titration of 100.00 mL of 0.0100 M Ce4+ in 1.00 M HClO4 by…
A:
Q: "): Calculate the pH of a buffer solution that is 0.20 M in sodium hypobromite (NaBro) and 0.10 M in…
A: Given;
Q: how total energy change and standard oxidation potential explain stability of different ions…
A: The total energy change required to break the intermolecular forces of a solid metal to form an ion…
Q: Calculate the volume of CO2 , measured at 19oC and 720mmHg pressure , which would be obtained by the…
A: Balanced equation: CaCO3 + 2HCl -------> CO2 + CaCl2 + H2O This suggests that 1 mol of CaCO3…
Q: How does potassium ferrocyanide K4[Fe(CN)6] prevent any pre-oxidation of the copper(I) ions in…
A: Oxidation : increase in oxidation number. Reduction : decrease in oxidation number.…
Q: what metal ion could form a coloured equilibrium mixture with thiocyanate ions
A: The metal ion could form a coloured equilibrium mixture with thiocyanate ions has to be given.
Q: (i) Name the method of refining to obtain silicon of high purity.(ii) What is the role of SiOz in…
A: The metallic compounds which are found in nature, called as minerals whereas the minerals which can…
Q: Write T on the blank provided if the statement is correct
A: Statement 2 and 3 is correct only one is incorrect.
Q: (a) Write the principle of electrolytic refining.(b) Why does copper obtained in the extraction from…
A: Write the principle of electrolytic refining.
Q: 3. What colors does Chrome yellow absorb? 4. What is the color of a mixture of Chrome yellow and…
A: Questions: 1) Why calcium carbonate mixed with Prussian blue but not wit Chrome yellow? 2) Colors…
Q: Calculate the copper activity in an aqueous 0.12 M CuCl2 solution.
A:
Q: Describe the principle behind each of the following processes: (i) Vapour phase refining of a metal.…
A: To eliminate pollutants from the metals the way toward refining is finished. The extensively…
Q: 2. Write balanced net ionic equations describing each of the following reactions: Dissolution of…
A:
Q: Zn+2 salts are white while Cu+2 salts are coloured. Why?
A: In case of transition metals, the color of salts is due to the excitation of an electron from d…
Q: How to prepare ammonium polysulfide solution? Type the reaction it gives with copper acetate.
A: Ammonium polysulfide is known only in solution and is generally obtained by passing hydrogen sulfide…
Q: Solution of salt (X) gives with caustic soda a white gelatinous ppt. and can remove the brown color…
A: Caustic soda is general name of Sodium hydroxide.
Q: The following potential diagram summarizes the results of electrochemical studies of the aqueous…
A:
Q: Why does using bathocuproine work to detect the amount of copper in a sample ? Specifically with…
A:
Q: This method requires acidic conditions to prevent iron from precipitating out as ferric hydroxide…
A: answer = Volhard method use to prevent iron from precipitating out as ferric hydroxide
Q: Explain why calmagite and eriochrome black T would not work well as indicators for EDTA titrations…
A: A blue dye called Eriochrome Black T (ErioT) is used as the indicator. This blue dye also forms a…
Q: subject: The effect of Fe 2+ and Fe + 3 ions on Cr treatment with Pyrite ZVI Fenton 1)chromium…
A: During Fenton process there are some experimental parameters changes to get the optimum conditions…
Q: formation of white precipitate with sodium bisulfite. * formation of magenta red coloration.…
A: The white precipitate is the addition product of bisulfite to the ketone. Reaction of C4H8O and…
Q: 1. Write the balanced molecular equation for the reaction of the CuSO4 with ammonia to form…
A: Dear student, since you have asked multiple questions but according to guidelines we will solve 1st…
Q: 2. Write the two defect reactions for the solution of Nb2O5 into TiO2 3. Calculate the lattice…
A: Since you have posted multiple questions in a single session we are entitiled to answer first…
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- 1. A newly discovered iron ore was weighted (5.408 g) and worked up to produced 0.3785 g of ignited Fe2O3 precipitate. What is the percent purity of the iron in the sample? 2. Distinguish between equivalence point and end point.A student was given Mg, Zn, Fe, and Cu metals He put each of them in dil HCIcontained in different test tubes Identify which of them(i) will not displace 112 from dli HCI(ii) forms a pale green substance(iii) will give 112 with 5% 11N0(iv)will be displaced from its salt solution by all other metalsWhich of the following salts does NOT cause permanent hardness? B CaCl, © M8SO, OCa(HCO,), 2
- A Chemist collected a 0.4891-g sample of an ore for Fe determination by a redox titration with K2Cr2O7.The ore was carefully crushed prior to weighing and dissolved in HCl and using a Jones reductor the ironin the sample was brought into the +2 oxidation state. After titration with diphenylamine sulfonic acid,itrequired 36.92 mL of 0.02153 M K2Cr2O7 to reach the end point. Show your solution why 77.86% is the iron content of the ore as %w/w Fe2O3.A Chemist collected a 0.4891-g sample of an ore for Fe determination by a redox titration with K2Cr2O7.The ore was carefully crushed prior to weighing and dissolved in HCl and using a Jones reductor the ironin the sample was brought into the +2 oxidation state. After titration with diphenylamine sulfonic acid,itrequired 36.92 mL of 0.02153 M K2Cr2O7 to reach the end point. Calculate the iron content of the ore as%w/w Fe2O3Give information about the structure of EDTA and the titrations with EDTA (indicators used, determination of the end point, reactions during the titration).
- Why is [Fe(OH2)l6]%+ prepared in an acidic solution? 13+ A. It is a Bronsted acid in aqueous solution B. It is stabilized against reduction in acid O C. It is not soluble in water at pH = 7.0 O D. All of the choicesA 0.4000 gram sample of a nickel ote is treated to dissolve the metal. The solution is made basic with ammonia, and 50.00 mL of 0.0900 M KCN solution is added. Titration if the excess cyanide ion requires 20.34 mL of 0.0500 M AgNO3, using KI indicator. What is the percentage of nickel in the ore?Where does the strongest IMF occur in liquid water?
- 1. A 0.9882 gram sample of iron ore is dissolved, the iron reduced to Fe2+, and the solution was titrated with 36.40 mL of 0.02065 M KMnO4 in acid solution. (a) Write the titration reaction. (b) Calculate the %FeO (M.M. = 71.85) in the sample. 2. A sample of primary standard grade K2Cr2O7 (MM = 294.20) weighing 0.2153 g is dissolved, the solution acidified and excess KI added. The liberated I2 requires 44.86 mL of the Na2S2O3 for titration. (a) Write the titration reaction. (b) Calculate the molarity of the titrant solution.Directions: Solve the problem with a complete step-by-step solution. A 0.8040-g sample of iron ore is dissolved in acid. The iron is then reduced to Fe21 and titrated with 47.22 mL of 0.02242 M KMnO4 solution. Calculate the results of this analysis in terms of (a) % Fe (55.847 g/mol) and (b) % Fe3O4 (231.54 g/mol).4. What volume of 0.001 M of FeCl3 solution should be added to 0.03 L of 0.002 M of AgNO3 solution so that silver chloride Sol particles move to the anode in an electric field? Write the formula for the Sol micelle.