With the knowledge on analytical separation and analyses, outline a suitable analytical separation protocol that can be employed to recover polluted river bodies and make them wholesome for drinking
Q: A method for the analysis of Ca2+ in water suffers from an interference in the presence of Zn2+.…
A: Consider the concentration of Zn+2 = 1 The concentration of Ca+2 = 100 The given…
Q: with your knowledge on analytical separation and analysis, outline a suitable analytical separation…
A:
Q: A supporting electrolyte is usually added to the analyte solution to minimize solution…
A: 1. SOLUTION - The correct option is (a) minimize solution resistance According to the question -…
Q: What are the different melting point apparatus that are available for routine analysis? Describe…
A: A melting point apparatus measures the melting Point of a given substance.
Q: outline how chemical precipitation is used to separate heavy metals from polluted water using…
A: Heavy metal are toxic substance which hazardous for human life. Generally heavy metal are present in…
Q: Sources of Error Determine the relationship between the observed/apparent value (EX) VERSUS that of…
A: Given: Not all the solid was transferred during the filtration of the precipitate.
Q: What are the criteria for a successful determination in gravimetric analysis?
A: Gravimetric analysis is a technique through which the amount of an analyte (the ion being analyzed)…
Q: Why chromatography is an important tool for analysis of organic compounds?
A: Chromatography is the most useful technique for identification or separation of different compounds…
Q: Which among these is the most important piece of data in a gravimetric analysis? Mass of analyte…
A: Gravimetric analysis : Gravimetric analysis, a method of quantitative chemical analysis in which…
Q: An analyst weighed 0.25045 g of the Buffalo River Sediment reference material. (RM # 8704) to…
A:
Q: Give the rationale behind major steps in the analysis such as blending, filtration, heating of the…
A: We need to give the rationale behind major steps in the analysis.
Q: 6. If more polar impurities are desired to be eluted first and then analyte, then at which stage do…
A: 6. If more polar impurities are desired to be eluted first and then analyte, then at step (c) i.e.…
Q: Many rivers in Ghana are affected by illegal small-scale mining. Studies have revealed extremely…
A: Before the industrial and medical purpose, polluted air must be undergone through various steps of…
Q: What are some advantages of the membrane filter technique in the analysis of a water sample? Some…
A:
Q: Explain two separation techniques how may be feasible for H2O vs Ethanol. One can be an industrial…
A: Separating alcohol from water may be done in a number of different ways. Heating the mixed liquid is…
Q: How analytes are recovered from SFC and SFE
A: SFE is supercritical fluid extraction, in which components in a mixture are separated from each…
Q: systematic
A: The separation of compounds under the influence of the mobile phase and the stationary phase is…
Q: A sample of anhydrous NaHCO3 (FM = 84.007) is suspected to be contaminated with either NaOH (FM =…
A: NaHCO3 is present as the Impurity. Now, mass of Na2CO3 Present = 27.2×10-3×0.0125×4×5×105.989 =…
Q: ive a detailed description of how these both analytical separation protocol will be employed to…
A: SOLUTION: Step 1: Nowadays, because of rapid technological development especially in developing…
Q: How are analytes usually recovered after SFC or SFE?
A: Step 1 of 1 SFE is supercritical fluid extraction, in which components in a mixture are…
Q: Spectrophotometric Determination of a Metal A 100.00 mL of exactly 250.0 mg/L Cu2+ stock solution…
A: To answer why NH3 is added to each standard solution before diluting with distilled water.
Q: A 2.0 g of MgCO3 was dissolved and diluted to exactly 500-mL volumetric flask. If 50-mL aliquot was…
A: Mass of MgCO3 = 2g Mol. Mass of MgCO3 = 84g/mol Volume of dilution = 500ml Volume of aliquot = 50ml…
Q: Studies have revealed extremely high deposites of heavy metals and particulate matters in rivers,,
A: Extremely high deposits of heavy metals and other particulates makes the drinking water unfit. The…
Q: size exclusion chromatography
A: The size exclusion chromatography can be used to determine the quaternary structure of the proteins…
Q: Give the rationale behind major steps in the analysis such as blending, filtration, heating of the…
A: Mixing of chemical substances is an interaction through which various chemicals are consolidated…
Q: Fluoride determination can be performed photometrically with alizarin red and Zirconium acid…
A: A question based on Beer-Lambert law, which is to be accomplished.
Q: Write the principle behind the following methods of refining :(i) Hydraulic washing(ii) Vapour phase…
A: The principle behind these processes are, (i) Hydraulic Washing: This method is based on the…
Q: What conclusion can be derived from the following sentences regarding analytical methods: I.…
A: The correct statements are : II. Volumetric methods do not require calibration if a primary standard…
Q: Suggest two possible applications for paper chromatography other than the separation of dyes or the…
A: Paper chromatography is a technique used for separation of components of a mixture. In paper…
Q: A three-component mixture containing AgCl, SiO2, and KBr was provided to you in the lab to isolate.…
A: Filtration is a separation technique which is used for the separation of an insoluble salt from a…
Q: You obtain an Unknown Sample from the Stockroom. You begin testing the solution through the steps…
A: Pb, Hg and Ag all produce white ppt of PbCl2, Hg2Cl2 and AgCl respectively . But in hot water, PbCl2…
Q: If some of the analytes were found to be out of range after doing the Quality Control and the…
A: Quality control is designed to detect ,check the actual quantity of analyte before patient's use.…
Q: A water sample was analyzed for Fe content using the iron- phenanthroline analysis: Reagent Blank…
A:
Q: You obtain an Unknown Sample from the Stockroom. You begin testing the solution through the steps…
A: The laboratory reaction of the chemical compounds are used to determine the specific properties of…
Q: 0.56 g 1,4‐dimethoxybenzene, 0.9 mL 2‐chloro‐2‐methylpropane, 5 mL nitrobenzene and 0.52 g graphite…
A: The given problem is related to green chemistry. Given: Reactants- Mass of 1,4‐dimethoxybenzene-…
Q: With your knowledge on analytical separation and analyses, outline a suitable analytical separation…
A:
Q: n paper chromatography,
A: Paper chromatography was discovered by Synge and Martin in the year 1943.
Q: Explain how it is that SPE cartridges & disks allow analysts to more efficiently pre- concentrate…
A: Interpretation- To explain that how SPE cartridges and disks allow analysts to more efficiently…
Q: use analytical separation and analyses to outline analytical separation method protocols that can be…
A: It has become an important need to prevent water pollution by removing all contaminants. Water is…
Q: what can be an analyte for using internal standard? sample: vegetable oil containing ethyl oleate,…
A: In the analytical techniques, such as gas chromatography or HPLC, standardization of the sample…
Q: With knowledge in analytical process separation and analysis, outline a suitable analytical…
A: Before the industrial and medical purpose, polluted air must be undergone through various steps of…
Q: Describe the recent development, fundamental principle and application of micro contact printing in…
A:
Q: There are two main types of gravimetric analysis. Volatilization methods are based on isolation and…
A: The given statement is false. Volatilization gravimetry involves separating components of our…
Q: Many rivers in Ghana are affected by illegal small-scale mining. Studies have revealed extremely…
A: Before the industrial and medical purpose, polluted air must be undergone through various steps of…
Q: Provide a complete and detailed separation scheme for the following compounds, you have the…
A:
Q: Help me.... Explain the principles of gel permeation chromatography in Polymer, what is the…
A: Gel permeation chromatography is a powerful analytical technique used to separate dissolved…
Q: For each of the following statements, answer True or False and explain your answer briefly. It is…
A: Color test and micro-crystalline test are used to find the drug present in the system. Different…
Q: A fly ash (ƿ = 1.8 g mL-1) aerosol consists of particles averaging 13 µm in diameter and with a…
A:
Q: The chlorophyll sample contains Mg2 + ions. Briefly describe the sequencing steps to determine the…
A: Determination of magnesium ion using Erichrome Black-T as indicator: The concentration of Mg2+ ion…
With the knowledge on analytical separation and analyses, outline a suitable analytical separation protocol that can be employed to recover polluted river bodies and make them wholesome for drinking
Step by step
Solved in 3 steps
- 1. A sample of pure sodium oxalate, Na2C2O4 , weighing 0.2856 g is dissolved in water, sulfuric acid is added, and the solution titrated at 70°C , requiring 45.12 mL of a KMNO4 solution. The end point is overrun and back-titration is carried out with 1.74 mL of a 0.1032 N solution of oxalic acid. Calculate the normality of the KMNO4 solution. Hint: A redox reaction is involed between oxalate and permanganate. Look at the changes in oxidation state by determining the balanced redox reaction: 5C20,2 + + 2MN2+ 2 Mn04 + 10H* → 10CO2 + 8H20In the titration calculation, moles of KOH were calculated from the known molarity and measured volume. Reaction stoichiometry was then used to convert that to moles of succinic acid. At this point, how could the moles of succinic acid be converted to a mass of succinic acid rather than a concentration?K2CO3 (aq)+ CaCl2 (aq)→ CaCO3 (s) + 2KCl (aq) Data Sheet Table 1: Data and Observations Material Mass CaCl2 2.0g K2CO3 2.5g Filter Paper 1.6g Watch Glass 35.8g Filter Paper + Watch Glass + Precipitate 38.9 Precipitate 1.5g Table 2: Mass of CaCl2 after 24 Hours Initial Observations 24 hour Observation Weigh Boat Mass of Weigh Boat 0.5g Mass of Weigh Boat 0.5g CaCl2 2.0g Mass of CaCl2 2.4g Mass of CaCl2 Calculate the theoretical yield of the solid precipitate. Then use that to calculate the percent yield of the solid precipitate.
- After studying the separation scheme for Group III cations and using your background knowledge on separation of Group I and Group II cations: (a) devise a flow chart or schematic diagram to separate and confirm the presence of the given ions in the solution below; (b) write the chemical formula of the precipitates formed; and (c) provide a brief explanation about your schematic diagram.3) 2.413 g sample contains Na CO̟, NaHCO and inert material. This sample was solved in water and diluted to 250.0 ml. 80 ml solution was taken and titrated with 0.09644 N HCl with the indicator of phenolftalein. 6.13 ml HCl was consumed. From a second solution, again 80 ml was taken and titrated with the same HCl solution with the indicator of methylorange. 15.4 ml HCl was consumed. Calculate the percentage of NaHCO¸ and 3 Na CO in sample (Na CO_=106.0 g/mol, NaHCO_=84.02 g/mol). 3Q2) a) Explain the titration curve (variation of pH with respect to addition of titrant) with suitable diagram and reactions involved when a strong base is added as titrant to a weak acid as analyte. (b) The saline water discharged from a thermal desalination plant was analyzed and it has following composition.(i) If the discharged water sample contains 4.2 g of potassiumchloride (KCl) per 500 mL of solution, determine its molarity.(ii) The sample contains CaCl2 and its concentration was found to be 0.04M. Calculate grams of CaCl2 present in 100 mL of the sample. (c) In complexometric titration, explain why a constant pH need to be maintained during estimation of metal ions using EDTA.
- As part of the analysis of water samples, the hardness of water is commonly measured and calculated. It is commonly expressed in ppm by mass (parts per million) of CaCO3. Parts per million is also equivalent to milligrams of CACO3 per liter of water. In a sample taken by an environmentalist, he was able to observe a hardness count of 205 mg CacO3/L. Given this hardness count of the sample, what is the molar concentration of Ca2+ ions in the water sample?Treatment of ammonia with phenol in the presence of hypochlorite yields indophenol, a blue product that absrobs light at 625 nm, which can be used for the spectrophotometric determination of ammonia. ocr -OH • NH, indophenol anion To determine the ammonia concentration in a sample of lake water, three samples are prepared. In sample A, 10.0 mL of lake water is mixed with 5 mL of phenol solution and 2 mL of sodium hypochlorite solution, and diluted to 25.0 mL in a volumetric flask. In sample B, 10.0 mL of lake water is mixed with 5 mL. of phenol solution, 2 mL of sodium hypochlorite solution, and 2.50 mL of a 5.50 x 10-4 M ammonia solution, and diluted to 25.0 mL. Sample C is a reagent blank. It contains 10.0 mL of distilled water, 5 mL of phenol solution, and 2 ml. of sodium hypochlorite solution, diluted to 25.0 mL. The absorbance of the three samples is then measured at 625 nm in a 1.00 cm cuvette. The results are shown in the table. Sample Absorbance (625 nm) A 0.374 В 0.621 0.045…3.) In the assay of NaHCO3, 3.0g of the solid is dissolved in 25mL water. What is the normality? How many mL of 1N H2SO4 will be required to neutralize this solution? From this volume of acid, compute the percent purity of NaHCO3.
- A 12.63 g sample of calcium ore was dissolved in HCl and gravimetrically analyzed, through the precipitation of calcium into CaC2O4 · H2O. The precipitate was filtered, washed, dried, and ignited at 500 oC until the weight was constant, giving a final mass of 2.35 grams pure CaCO3 (100.087 g/mol). Calculate the % Calcium (40.078 g/mol) in the sample.A sample of material contains the components NaOH, Na2CO3, NaHCO3 , or possible mixtures of these. Two samples, each weighing 1 .000 gram, are dissolved in water. To one sample phenolphthalein is added and the solution is titrated cold with 1.038 N acid, of which 17.96 ml are required. The other sample is titrated cold with methyl orange as an indicator, and 21.17 ml of the same acid is required. Calculate the percentage of alkalies present.What is the importance of non-aqueous titrations in pharmaceutical analysis?