Distinguish between zeolite and ion exchange processes of sotening water.A watar sample when analysed for total dissolved solids content was found to contain 7000 ppm of NaCi and KCI, Explain a viable method for purification of this water from the dissolved solids content.Once you upload fles trom your second device. dick on ose to check your submissionCamera

Hard Water is always converted into soft water. Hard water always has a higher mineral content when…

Distinguish between zeolite and ion exchange processes of softening water. A water sample when analysed for total dissolved solids content was found to contain 7000 ppm of NaCl and KCI. Explain a viable method for purification of this water from the dissolved solids content.

Distinguish between zeolite and ion exchange processes of softening water. A water sample when analysed for total dissolved solids content was found to contain 7000 ppm of NaCl and KCI. Explain a viable method for purification of this water from the dissolved solids content.

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter28: Atomic Spectroscopy

Section: Chapter Questions

Problem 28.13QAP

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Procedure: analytically transfer between 0.4053g of iron(III) chloride hexahydrate, FeCl 3•6 H2O (M = 270.2957g•mol-1), and dissolve in 5.5 mL distilled, deionized water. Support the tube on a stir plate and over a 15-minute period add, using the 10mL burette, 5mL of a nominal 600mM solution of 2,4 pentandione in methanol under constant stirring. To the resulting solution, add via a 10mL burette 3mL of a nominal 450mM sodium acetate solution stirring constantly. At this point, a red crystalline solid should begin to precipitate. Transfer and support the reaction vessel in the hot water bath and once the reaction mixture has reached a stable temperature in the desired range, maintain the reaction mixture at this temperature, under constant stirring, for a 15-minute period Initial weight of iron(III) chloride hexahydrate: 0.4053g The final weight of the reaction tris(acetylacetonate)iron(III): 19.6 mg 3. What is the charge on the metal in the starting material for your synthesized…
A sample of steel (0.506 g) was digested in acid and the solution made up to 100 cm3 with deionised water. Aliquots (25.0 cm3) of this solution were transferred into two volumetric flasks (100 cm3) labelled A and B. Flask A was made up to volume with deionised water. To flask B was added 10.0 cm3 of a 260 ppm standard solution of Mn2+ which was then also made up to volume with deionised water. The following absorbance results were obtained: Solution A = 0.356, Solution B = 0.578. Use these results to calculate the percentage (% w/w) of manganese in the steel sample.
Suppose you have a soil that is made up of 10% organic matter with CEC = 200 cmol/kg, 40% kaolinitewith CEC = 10 cmol/kg, and 50% vermiculite with CEC = 100 cmol/kg.1- Calculate the overall CEC of the soil by taking a weighted average of the three soil components.2- What percentage of the overall CEC is contributed by the organic matter? How does that numbercompare to the 10% of the soil itself that is organic?
Note: Express % strength with 4 decimal places. For ratio strength, state the volume only% Astelin nasal spray contains 0.1% azelastine hydrochloride and 125 mcg/mL of benzalkonium chloride as a preservative. A container is capable of delivering 200 metered sprays of 0.137 mL each. The percent concentration of benzalkonium chloride in the preparation is _______%, which is equivalent to a ratio strength of 1 in _____ w/v.
For Indirect Iodometric Analysis of Copper... ~0.0896g KIO3 necessary to consume 350mL of 0.1 M Na2S2O3, Na2S2O3 is stored in an amber glass bottle until ready for use. Primary Standard KIO3 has 2g of KI, 50mL of DI water, and 10 mL of 1.0M HCl is added then immediately titrated with Na2S2O3 until medium yellow or straw... then 5mL of starch indicator is added and titrated again until blue black color turns clear. Unknown CuO use 1.2G of Unknown, 20mL of HNO3 heated until sample dissolved, 25 mL of DI water added and boiled until clear light blue color, after cooling 1:1 NH3 added (~34.47 mL of NH4OH reagent) until permanent deep blue color amine complex, 2g of NH4HF2 added and swirled until dissolved, 3 g of KI is added then titrated immediately with Na2S2O3 until brown color of iodide is nearly gone (brown milk color), 2 g of KSCN and 3 mL of starch indicator is then added with titration continuing until disappearance of new blue black color. 1. Na2CO3 is often added to thiosulfate…
For Indirect Iodometric Analysis of Copper... ~0.0896g KIO3 necessary to consume 350mL of 0.1 M Na2S2O3, Na2S2O3 is stored in an amber glass bottle until ready for use. Primary Standard KIO3 has 2g of KI, 50mL of DI water, and 10 mL of 1.0M HCl is added then immediately titrated with Na2S2O3 until medium yellow or straw... then 5mL of starch indicator is added and titrated again until blue black color turns clear. Unknown CuO use 1.2G of Unknown, 20mL of HNO3 heated until sample dissolved, 25 mL of DI water added and boiled until clear light blue color, after cooling 1:1 NH3 added (~34.47 mL of NH4OH reagent) until permanent deep blue color amine complex, 2g of NH4HF2 added and swirled until dissolved, 3 g of KI is added then titrated immediately with Na2S2O3 until brown color of iodide is nearly gone (brown milk color), 2 g of KSCN and 3 mL of starch indicator is then added with titration continuing until disappearance of new blue black color. 4. Why is the starch indicator solution…
With the principles of GFC, which of the following statements is incorrect?a. For small molecules, their elution volume, Ve > VOb. For a very large molecule, its elution volume, Ve = Voc. Blue dextran is used to determine the void volume because it is too large and cannot get into the beads and therefore excluded from the gel.d. Low molecular weight molecules are freely accessible to the gel particles, and elute at a volume equal to the internal pore volume.Pls explain why
As a newly appointed research officer, Marissa has been assigned a task to separate a mixture containing acetone, acetamide and 1,2-dichloroethane using a high-performance liquid chromatography (HPLC) technique. The instrument was equipped with a 40-cm column packed with cyano propyl bonded to the siloxane backbone material. i) List THREE (3) examples of mobile phase solvent/solvent systems that can be used with the column above. ii) Determine the sequence in which the three analytes eluted from the column and explain the underlying principle applied. iii) Sketch the chromatogram that would be produced if the column was replaced with a column filled with C18 hydrocarbon bound to the siloxane backbone material and acetonitrile was employed as the mobile phase. Label the peaks observed.
A feedstuff weighing 2 g and moisture content at 5%. When estimating the crude protein, use 82 ml of HC1 (0.01 N) (Plank volume = zero). Calculate i. The percentage of crude protein base on dry matter. ii. The percentage of crude protein base on natural (fresh) material. iii. The percentage of crude protein base on organic matter, when crude ash in the feedstuff is 0.3 g.
(a) Water in vadose zone contains chlorobenzene of concentration 40 mg/L. What is the equilibrium concentration soil air in contact with this solution? (b) An aquifer with porosity 0.3 has distribution coefficient of TCE as 100 L/kg. What fraction of TCE is in aqueous phase and sorbed phase of the soil?
In gravimetric analysis, co-precipitation occurs alongside with analyte precipitation,resulting in the introduction of impurity and excess mass. Occlusion and inclusion areamong the sources of impurities. Distinguish the difference between occlusion andinclusion and compare them using diagrams
To determine the soil distribution coefficient (Kd), 10 g of dry soil is spiked with 100 mg of ring-labeled 14C-atrazine, 10 mL of deionized water is added, and the system is shaken for 24 hours. The aqueous and solid phases are separated, and the solid phase is extracted with 50 mL of methylene chloride while the aqueous phase is extracted with three successive 5 mL portions of methylene chloride. The atrazine concentration in the 50 mL of soil extract is 10 mg/L, and the concentration in the combined 15 mL from the aqueous extractions is 0.4 mg/L. Based on this information, calculate Kd.