Preparation of standard ethylenediaminetetraacetic acid copper(II) disodium salt solution Mass of ethylenediaminetetraacetic acid copper(II) disodium salt (± 0.002 g.) 0.613 g Molar mass of ethylenediaminetetraacetic acid copper(II) disodium salt = 397.74 g mol–1. Show your calculations here (with appropriate number of significant digits and units in final result) amount (mol) of solute volume of solution (litres) Molarity Concentration of ethylenediaminetetraacetic acid copper(II) disodium salt =
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- To determine the percent purity of a sample containing iron(II) ammonium sulfate; Suggest , 2 different methods for iron(II) ion. Explain in detail what errors may occur in the methods. (volhard method, gravimetric analysis, kjeldahl, etc.) Percentage content: 1-100% ; the solution concentrations to be used are 0.01-0.1M; Take the volumes of solution to be used between 1-50 mL1. Titration of 0.485g sample by the Mohr method required 38.8mL of standard 0.1060 M AgNO3 solution. Calculate the percentage of chloride in the sample.In this activity, you will develop an experimental procedure to solve a problem. Consider the followingscenario:You are the manager of a chemical stockroom, and find a bottle containing approximately one liter of aclear and colorless solution of unknown identity and concentration. Your only clue to its identity is thatit was found between bottles of silver fluoride and sodium fluoride, so it is likely an aqueous solution ofone of those two compounds. You will need to develop a procedure to determine the following:a) The identity of the unknown solutionb) The concentration of the unknown solutionWrite out a precise procedure, which includes all glassware, reagents, and steps. You will also need towrite the calculations that you would need to determine the concentration of the solution. Assume thatyou have access to any reagent you might need
- 1. Write balanced net ionic equations for the following reactions: a) The precipitation of the chloride of Hg22+ in Step 1.[Review Topics] [References] Use the References to access important values if needed for this question. The compound chromium(II) iodide is a strong electrolyte. Write the transformation that occurs when solid chromium(II) iodide dissolves in water. Be sure to specify states such as (aq) or (s). Submit Answer Retry Entire Group 1 more group attempt remaining Previous Next Email Instructor Save and Exit Cengage Learning | Cengage Technical Supportngagenow.com/ilrn/takeAssignment/takeCovalentActivity.do?locator3Dassignment-take [References] oice - Part 1 Use the References to access important values if needed for this question. You need to make an aqueous solution of 0.169 M chromium(III) sulfate for an experiment in lab, using a 500 mL volumetric flask. How much solid chromium(III) sulfate should you add? grams Submit Answer Try Another Version 10 item attempts remaining (Previous Show Hint Cengage Learning | Cengage Technical Support Lab 1 (3).pptx Chapter 8 pres..pptx Lab 1.pdf A Lab 6.pdf lab 5.pdf Lab 4.pdf
- bria [Review Toplcs] [References] Use the References to access important values if needed for this question. 2+ In the laboratory you are given the task of separating Ba and Pb ions in aqueous solution. For each reagent listed below indicate if it can be used to separate the ions. Type "Y" for yes or "N" for no. If the reagent CAN be used to separate the ions, give the formula of the precipitate. If it cannot, type "No" Y or N Reagent Formula of Precipitate if YES 1. Na,S K,CO3 K2SO4 Submit Answer Retry Entire Group 4 more group attempts remaining Previous Next 2. 3.A cvg.cengagenow.com ome OWLV2 | Online teaching and learning resource from Cengage Learning [Review Topics) [References) Use the References to access important values if needed for this question. In the laboratory you are given the task of separating Pb* and Zn* ions in aqueous solution. For each reagent listed below indicate if it can be used to separate the ions. Type "Y" for yes or "N" for no. If the reagent CAN be used to separate the ions, give the formula of the precipitate. If it cannot, type "No" Y or N Reagent Formula of Precipitate if YES 1. KI 2. K,S 3. KOH Submit Answer Retry Entire Group 9 more group attempts remaining Previous Next Email Instructor Save and Exit Cengage Learning | Cengage Technical Support MacBook Air 80 888 DII DD F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 2$ & ( 4. 7 8 9. del + I| * 00 くoSolid potassium sulfide is slowly added to 150 mL of a 0.277 M nickel(II) iodide solution until the concentration of sulfide ion is 0.0269 M. The percent of nickel ion remaining in solution is %. 20 Submit Answer $ 4 R F M 07 20 Retry Entire Group % 5 [Review Topics] [References] Use the References to access important values if needed for this question. T Cengage Learning Cengage Technical Support G ^ 6 8 more group attempts remaining D MacBook Pro Y H & 7 N U * 00 8 J I M 69 K O ) 0 < A L P A Previous Next Email Instructor { Save and Exit ~4 ? 1
- Ammonium sulfate is added to an unknown mixture of ions. No precipitate forms. Ammonium oxalate is then added and a precipitate forms. The solution is centrifuged, and the remaining solution is decanted. Sodium monohydrogen phosphate and sodium hydroxide are added to the decanted solution, and no precipitate forms. Sodium hydroxide is added to a fresh sample of the unknown. A damp piece of litmus paper over the opening of the test tube turns blue. Select the ions present. Ba2+ Ca2+ O Mg2+ NH41+You are the manager of a chemical stockroom, and find a bottle containing approximately one liter of aclear and colorless solution of unknown identity and concentration. Your only clue to its identity is thatit was found between bottles of silver fluoride and sodium fluoride, so it is likely an aqueous solution ofone of those two compounds. You will need to develop a procedure to determine the following:a) The identity of the unknown solutionb) The concentration of the unknown solutionWrite out a precise procedure, which includes all glassware, reagents, and steps. You will also need towrite the calculations that you would need to determine the concentration of the solution. Assume thatyou have access to any reagent you might need. You may also assume that you have access to commonlaboratory equipment. You observed some examples of laboratory equipment within the VirtualChemistry Laboratory simulations. You may visit the virtual lab at chemcollective.org to refamiliarizeyourself with…Determinati an 25 ml by dissolving 110n (111) per 1 This (as ml 750ml experiment Solution The to of was The a and process Q on added The portion layer taken 1 volumetric diluted Litre Colution Two These of in diluted ml soo 1% ETA of Question A. reaction an Solution 0₁ 446 9 of A. R. hydrated sulphate, (NH4) Fe (504) ₂ · 12H₂0 2 of distilled then of wertel) 0,0446 g/L of lion Absorbance was 250 ml in to ·layers frask was Is 2. 3. Was Chlore form and were 5 ml, 10 ml, 15 ml por tions 4. Iron • iron (111) four oxine it mixture the done. (111) seperatory conducted Volume SMT as 10 ml 15 ml 20 ml Plo + absorbance formed readings a (A.R) Jayer measured the por tions Solution was Water diluted out 20 ml were then Each of these mark against funnel as was after with for 8- ity droxy quinolate. follows. to iron (111) solution was prepared of then Calibration was ) 10 obtain collected. ammonium F. W-481,979 then these Absorbance 0,076 0,169 9185 0₁234. Shook. the shaking added portions…