Match the electrolyte with the most common test method. Question 102 options: potassium lactate sodium calcium CO2 magnesium 1. ion-selective electrode 2. colorimetric 3. enzymatic
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Match the electrolyte with the most common test method.
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- A sample of unknown iron ore weighs 0.35 g. It is digested using dilute HCl. An SnCl2 solution is added to turn the solution yellow. Zimmermann–Reinhardt reagent is added, and the solution is diluted to 150mL. It is then titrated with 31.30 mL of 0.045 M potassium permanganate. a) How many moles of MnO4- were used to titrate the iron in the sample? b) How many moles of Fe2+ were in the sample? c) What is the mass of iron in the sample? d) What is the % w/w of Fe in the sample?A silver nitrate solution contains 29.53 g of primary standard AGNO3, in 1.00 L what volume of this solution is needed to react completely with 50.00 mL of 0.01808 M Na,S. 1. O10.40 mL 2. O20.79 mL 3. O6.10 mL 4. O12.31 mL 5. O18.21 mLWhat type of equipment is used to conduct the chloride test in boiler water?
- What are some common sources of chloride in boiler water?Module 8: H X 7087483#/7087483/16/2 % General Chemistry 4th Edition McQuarrie Rock Gallogly Question 25 of 35 - Module 7 Ho X [13] = x10 TOOLS Topic: Week 4 Discussion Resources C Give Up? The amount of I5 (aq) in a solution can be determined by titration with a solution containing a known concentration of S₂O3(aq) (thiosulfate ion). The determination is based on the net ionic equation 2S₂O3(aq) + 13(aq) →SO (aq) +31-(aq) Given that it requires 41.0 mL of 0.450 M Na₂S₂O3(aq) to titrate a 20.0 mL sample of I3 (aq), calculate the molarity of 15 (aq) in the solution. Hint University Science Books presented by Macmillan Learning M Question Source: McQuarrie, Rock, And Gallogly 4e-General Chemistry C CIn the determination of iron in limonite, 0.5166 g of mineral is dissolved in acid and Fe2 + is titrated with 42.96 ml 0.0213 M Na2Cr2O7. Calculate the percentage of iron in limonite. (Ma (Fe): 56 g / mol) A. 28.36 B. 31.89 C. 59.51 D. 64.25
- Shana, a student in the Analytical Chemistry class, performed a Redox Titration to determine the content of hypochlorite ions (% w/w) in an unknown solution. First, Shana prepared a primary standard solution of KIO3 by dissolving 0.4791 g dry KIO3 in 250.00 mL DI water. Next, using the procedure in your lab manual, Shana used 50.00 mL of this primary standard solution to standardize the Na2S2O3 titrant, and 26.25 mL of titrant was consumed. Next, Shana prepared the unknown solution by diluting 12.8624 g of the solution in 250.00 mL of DI water. A 50.00 mL portion of this dilute unknown solution was titrated using the procedure in your lab manual, and 19.25 mL of Na2S2O3 solution was consumed. Answer the following questions about this titration. Recall the stoichiometry of the NET chemical equation for this reaction. Note: use appropriate significant figures in your answer! A. Calculate the concentration (M) of Na2S2O3 titrant. B. Determine the amount (g) of hypochlorite ion in 50.00 mL…One mL of an unknown solution is placed in a test tube and a few drops of NaOH are added and shaken well. 1 mL of aqueous NH3 is then added to the solution and shaken again. A deep blue solution is observed. What is the interpretation for this result? Select one: A. There is Iron(III) (Fe3+) present in the solution. B. There is Zinc (Zn2+) present in the solution. C. There is Copper(II) (Cu2+) present in the solution.Which of the statements given below is correct? A. Iodometry is a method in which 12 solution is used as a titrant and the substances that can reduce iodine to iodine can be determined. B. Starch indicator is added to the medium at the beginning of the titration. C. All metal salts other than alkali salts dissolved in water cause hardness properties. D. 1 German hardness is the hardness of water containing cation equivalent to 1 mg CaCO3 per 100 mL.
- Alkalinity is normally measured in terms of CaC03. What is the formula weight of this compound? In what way might this formula weight make CaC03 a convenient reference material for alkalinity?line teaching and lea X + om/ilrn/takeAssignment/takeCovalentActivity.do?locator=assignment-... ☆ Visited [Review Topics] [References] Use the References to access important values if needed for this question. In the laboratory a student combines 20.5 mL of a 0.177 M sodium phosphate solution with 12.7 mL of a 0.571 M sodium bromide solution. What is the final concentration of sodium cation ? M Submit Answer Retry Entire Group 9 more group attempts remaining Previous Next I Save and Exit ☐ X S 11:09 PM 8/31/2022 ...The scientist starts with four solutions made of water-soluble salts. Solution A contains sodium arsenate. Solution B contains ammonium oxalate. Soution C contains silver chlorate. Solution D contains aluminum bromide. Solution Solute Color of Solution A Na3AsO4Na3AsO4 colorless B (NH4)2C2O4(NH4)2C2O4 colorless C AgClO3AgClO3 colorless D AlBr3AlBr3 yellow The results of mixing each solution in pairs are shown in the table. Experiment Solutions Mixed Result 1 A + B no precipitate, colorless solution 2 A + C brown precipitate 3 A + D white precipitate 4 B + C white precipitate 5 B + D white precipitate 6 C + D yellow precipitate Identify the formula for each precipitate that forms. precipitate from A+C: precipitate from A+D: precipitate from B+C: precipitate from B+D: precipitate from C+D: