Preparation and Standardization of 0.1 N lodine Solution Preparation 1. Dissolve 14 g of iodine in a solution of 36 g of potassium iodide in 100 ml of water 2. Add 3 drops of hydrochloric acid and dilute to 1000 ml Standardization 1. Weigh 150 mg of arsenic trioxide (As203) and dissolve in 20 ml of 1 N sodium hydroxide by warming it necessary 2. Dilute with 40 ml of water, add 2 drops of methyl orange TS and follow with diluted hydrochloric acid until the yellow color is changed to pink 3. Add 2 grams of sodium bicarbonate, dilute with 50 ml off water, and add 3 ml of starch TS 4. Slowly titrate the lodine solution into the analyte until a permanent blue color is produced. 5. Calculate the normality. "Volume of iodine which produced the permanent blue color: 30.2 ml Standardization: REACTION Arsenic Trioxide Volume of iodine Normality As2O3 + 6NaOH → 2Na3AsO3 + 3H₂O Na3ASO3 + 12 + NaHCO3 → Na3AsO4 + Nal + CO₂ + H₂O DATA 0.150 g 30.2 mL

Preparation and Standardization of 0.1 N lodine Solution Preparation 1. Dissolve 14 g of iodine in a solution of 36 g of potassium iodide in 100 ml of water 2. Add 3 drops of hydrochloric acid and dilute to 1000 ml Standardization 1. Weigh 150 mg of arsenic trioxide (As203) and dissolve in 20 ml of 1 N sodium hydroxide by warming it necessary 2. Dilute with 40 ml of water, add 2 drops of methyl orange TS and follow with diluted hydrochloric acid until the yellow color is changed to pink 3. Add 2 grams of sodium bicarbonate, dilute with 50 ml off water, and add 3 ml of starch TS 4. Slowly titrate the lodine solution into the analyte until a permanent blue color is produced. 5. Calculate the normality. "Volume of iodine which produced the permanent blue color: 30.2 ml Standardization: REACTION Arsenic Trioxide Volume of iodine Normality As2O3 + 6NaOH → 2Na3AsO3 + 3H₂O Na3ASO3 + 12 + NaHCO3 → Na3AsO4 + Nal + CO₂ + H₂O DATA 0.150 g 30.2 mL

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter4: Types Of Chemical Reactions And Solution Stoichiometry

Section: Chapter Questions

Problem 47E

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nohesup och towana no bas moldog sniwallot om besl odi sisluola) (1) obrolde (II)noni y 12 Tamisanos noituloa zucoups Jm-0.28 nA noituloz od to vinelom fatuloz or lo 22ant orb 21 JW 2 Solution 1 2 3 4 Part 1 Data related to aqueous solutions of sodium chloride (NaCl) and aqueous solutions of ethanol (C₂H5OH) are provided in the table below. Use the table to answer the following questions. Circle the letter of the choice that best answers the question. NaCl 3.0 3.0 3.0 3.0 Mass (g) H₂O 100.0 200.0 300.0 400.0 Solution 5 6 7 8 Snoitulor odi to smudov odi 21 IndW 2. Which of the following solutions is the most dilute? a. Solution 1 b. Solution 2 Volume (mL) C₂H5OH 2.0 5.0 9.0 15.0 c. Solution 3 H₂O 100.0 100.0 100.0 100.0 d. Solution 4
b My Questi x Co. How to Ca X N NSU Login X PeriodicTa X M Action Re x 0 mySigTau XG 4.25 ml to X ( NBA FinalX G scientific X + enow.com/ilrn/takeAssignment/takeCovalentActivity.do?locator%3Dassignment-take [References] A 1:1 mixture by moles of nitrous oxide and oxygen is often used as a sedative in dentistry. If the total pressure of this mixture in a cylinder is 3.75 atm, what is the partial pressure of each gas? Partial pressure of nitrous oxide = atm Partial pressure of oxygen = atm Submit Answer Try Another Version 3 item attempts remaining Previous Next Email Instructor Save and Exit Cengage Learning | Cengage Technical Support
70 alll ll ? ..::0E is اجابة قصيرة A solution of Al2 (S04) 3 at a concentration of 0.3 N , What is the volume needed to prepare a solution at a concentration of 0.04 M in a volume of 150 ml of distilled water إجابتك كتب إجابتك. . is
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5. A solution containing 15 mmole of CaSO, is diluted to 250 mL. The number of milligrams of CasO4 2H;0 per ml of the final solution is (Atomic weights: Ca 40, S =32, 0 = 16, H = 1):
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e teaching and lear X H /ilm/takeAssignment/takeCovalentActivity.do?locator=assignment-take Paraphrasing Tool - QuillBot Al 8 Submit Answer & [Review Topics] [References] Use the References to access important values if needed for this question. How many grams of calcium acetate, Ca(CH3 COO)2, must be dissolved to prepare 250. mL of a 0.223 M aqueous solution of the salt? Q Search U * 8 Retry Entire Group K - C hp KA CJHLUSS Pura LSI dete TUF Ls que X O 8 more group attempts remaining 110 ►ll P PAI Mod 112 [ ✈ + 11 ins + prt sc 1 delete 4 backspace ^O64) O enter home num lock 7 home 4 ✰ ☐ end 3:37 PM 5/21/2023 004 A pg up 1/ 07 * X MEN pg dn 9 pg up COT +
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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…