Q: A weak acid, HA, has a pKa of 6.5. If you are utilizing ion-exchange chromatography with an anion…
A: ion-exchange chromatography is the technique used in Biomolecules such as Carbohydrates, protein…
Q: Consider the retention time of a pesticide is.13 8.5 min and the peak width at the base = 1.7 min,…
A: Given that, The retention time of a pesticide tr = 8.5 min Peak width at the base σt = 1.7 min…
Q: What is the significance of the Amax of a spectrum? What are the other uses of the…
A:
Q: You are given 2 ml of a stock solution of phenol red at a concentration of 258 mg/ml and 20 ml of…
A: Solution is prepared by the addition of solute into a solvent. pH is the negative logarithm of…
Q: Fluorometry is more selective and more sensitive than absorption spectrometry.Tell what is meant by…
A: Sensitivity: It is relatively easy to detect lower level of light from fluorescent emissions than…
Q: Differentiate acidimetry from alkalimetry
A:
Q: what is chromatography? Explain different types of chromatography and explain how to seperate…
A: Chromatography is a laboratory technique. It is use for the separation of the components or solutes…
Q: Hd 14 12 10 00 5 4 2 0 0 Titration Data 0.5ml Volume (ml) 1.0ml 2ml
A:
Q: What are the 5 important characteristics of spectrophotometric methods
A: Spectrophotometry is a technique to gauge how much a synthetic substance ingests light by estimating…
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: 4. Give the function of the following parts of the spectrophotometer. b. Collimator C. Slit d.…
A: (a)Collimator-It is a device for changing the diverging light or other radiation from a point source…
Q: To quantify the Cadmium content in a water sample, 5 aliquots of 10 mL were taken, adding to each…
A: The amount of concentration in the sample can be calculated using the following formula. In this…
Q: describe how to perform a qualitative analysis and a quantitative analysis using spectroscopy on the…
A: Answer - pharmaceutical drug - Pharmaceutical, substance used in the diagnosis, treatment, or…
Q: The standard curve was made by spectrophotographic analysis of equilibrated iron(III) thiocyanate…
A: Given the linear regression equation for the analysis of the standard solution is Y =…
Q: Describe the following as used in analytical chemistry a) semiqualitative analysis b)Assay c)…
A: The given terms in analytical chemistry has to be defined.
Q: In your own words, describe the following terms as used in analytical chemistry. a)…
A: a) semiqualitative analysis Answer - Qualitative analysis is the detection or identification of the…
Q: What does the %RSD, listed in the spectral data, as well as the correlation coefficient of your…
A: %RSD - RSD is abbreviation for relative standard deviation. This represents the deviation of a set…
Q: Define: spectrochemical methods, spectroscopy, spectrometry, spectrometer, and spectrophotometer.…
A: spectrochemical methods: These methods measure the amount of electromagnetic radiations emitted or…
Q: In spectrophotometry, there is a linear relationship between the extinction coefficient and…
A: The absorption and emission of light or other electromagnetic radiation by substances is studied…
Q: _is a technique which is used to separate a single chemical 3. compound from a mixture dissolved in…
A: Chromatography can be defined as the technique used for separating mixtures with the help of a…
Q: create a qulaitative analysis separations flow chart for the separation of Sb3+ and Cd2+
A: Qualitative analysis is a method to identify ions in a given mixture. It can be done by selective…
Q: 1. What are the advantages and relevance of performing the following in a chemical pathology lab? i.…
A: A blank solution is a solution containing little to no analyte of interest, usually used to…
Q: 7-2: Why do quantitative and qualitative analyses often require different monochromator slit widths?
A: 7-2 The monochromator is a wavelength selector that is used to select a particular wavelength from a…
Q: a] An analyst would like to analyze the concentration of Mg2+ in a solution. He needs a calibration…
A: A question based on absorption that is to be accomplished.
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: stationary phase and mobile phase
A:
Q: 2. What type of instrumental analysis technique is used to measure the concentration of an analyte…
A:
Q: 19. What type of sample analysis usually operates on the 10-4 g scale of sample size? A. macro…
A: 19. Option D. Ultra micro analysis
Q: Volume vs pH 14 12 10 equivalence point 2 equivoler ce point - 10 15 20 25 30 Volume of base added…
A: As equivalence point is at pH 8 it means we have weak acid assume HA . So salt of weak acid have A-…
Q: Explain Qualitative Chemistry and Quantitative Chemistry .
A: Qualitative Chemistry and Quantitative Chemistry has to be explain,
Q: Explain why the concentration of zinc cannot be determined directly using a spectrophotometer.
A: The atomic no of zimnc is 30. It contain many free electrons
Q: How is spiking used in qualitative analysis? Why are several different types of columns necessary to…
A: The technique of Spiking the sample involves addition of a known reference substance to a sample, in…
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: The hardness of water is analyzed using titration. A liter of water sample from tap water found to…
A:
Q: #9: This unknown contains 51.90 % C and 9.80 % H by mass with the remainder being an unknown element…
A: Molecular formula : C4H9Cl ( DBE = 4- (9+1/2) + 1= 5-5 = 0. Therefore the compound is n-butyl…
Q: What compounds present in a sample that can cause error in the analysis and alter desired results?…
A: Interpretation - We have to tell that due to which compounds present in a sample that can cause…
Q: Briefly explain how cation exchange chromatography can used in protein separation?
A: Cation exchange chromatography is a form of ion exchange chromatography (IEX), which is basically…
Q: Three titration trials were performed and three molar concentrations of NaOH were calculated. The…
A: We would use formula to calculate standard deviation .
Q: 1. From spinach, the chromatographic analysis will yield two major substances: (a) B-carotene…
A: (i). Characteristics of beta-carotene: β-carotene is the molecule that gives carrots, sweet…
Q: 33. What is the concentration of an analyte given that the percent transmittance is 70.3%, the path-…
A: Answer: According to Beer-Lambert law A=εbC Here: A=absorbanceb=path lengthC=concentrationε=molar…
Q: The lead level in a sample of contaminated soil was determined using AAS. A 2.0 g sample was…
A: This question is related to finding out the sensitivity of the method. Basically gradient or slope…
Q: Chosen wavelength : 400 nm EDTA Volume (mL) Absorbance O mL 0.445 1 mL 0.439 2 ml 0.434 3 ml 0.428 4…
A: Answer
Q: The student was supposed to measure the pH of a 0.1 M hydrochloric acid solution. For this purpose,…
A: Concentration of HCl = 0.1 M
Q: Give the general steps in the use of a spectrophotometer.
A: A question based on spectrophotometer, which is to be accomplished.
Q: Which of the following is correct: Selection of the method is the first step in the qualitative…
A: We will be choosing correct answer from the following statements.
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…
Q: The basic spectrophotometer is composed of four components. Which component listed below is NOT one…
A: A question based on tools in analytical chemistry that is to be accomplished.
Q: 1. Colorimetric methods of analysis are based on having a reagent that changes as a function of the…
A: The correct option is (c) Calorimetric analysis is based on the the principle of beer-lambert law.…
Q: In using the spectrophotometer PD 303, why is there a need to use water as blank when measuring the…
A: In using the spectrophotometer, water is used as blank when measuring the absorbance of each…
Differentiate between qualitative analysis and quantitive analysis?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- The spectroscopic data in the table is generated with five solutions of known concentration. Concentration (M) 0.0133 m= 0.0266 0.0532 0.106 0.213 Absorbance 0.1271 What is the intercept of the linear regression line? 0.08531 0.5388 1.069 Use a spreadsheet program, such as Microsoft Excel, to graph the data points and determine the equation of the best-fit line. 1.954 What is the slope of the linear regression line formed by these points? M-1What are the advantages and disadvantages of volumetric and gravimetric analysis?use ion exchange method in analytical separation to separate mercury and nickel from polluted water using analytical steps and protocols.
- Analytical chemistry is a particular field within the broader spectrum of the chemical sciences, in which many times the focus of analytical experiments is to develop new methods to analyze compounds, either structurally or by determining concentrations of compounds. One of the processes analytical chemists use to determine the exact concentration of a working solution is called standardization. In your own words, describe the differences between a primary, secondary, and tertiary standard, and describe the underlying concept behind the standardization process. Why is it done?What are the differences between systematic and random errors and how do they effect accuracy and precision? In what circumstances would you use standard addition (versus a normal calibration curve) to determine the amount of an analyte in a sample? A urine sample, containing analyte Z is analysed by the standard addition method where 5 mL of the original sample was mixed with increasing amounts of a Z standard and each solution diluted to a volume of 50 mL prior to analysis. A plot of the final concentration of the standard in each of the 50 mL samples (x axis) versus The measured signal from the analysis of each 50 mL sample (on y axis) produced a straight line with the general equation: y = 44.72x + 4.06 what was the final concentration of Z in the 50 mL standard addition sample? what was the initial concentration of Z in the original urine sample?Briefly define the phrase “fit-for-purpose” in relation to analytical chemistry.
- Construct a calibration curve based on the following data: Concentration Fe 0.100 0.500 2.00 4.00 7.00 (ppm) Absorbance 0.0122 0.0608 0.2322 0.455 0.5858 Use LINEST to find the slope and intercept and their uncertainties. Enter your answer as a number with no units to three significant figures. 0.085 0.037 b m 0.100 0.500 Sm Sb r2 0.958 0.037 SyWhat are the types of gravimetric methods? Give an examples where each method is used in an analysis. What is particulate gravimetry? When do we use this technique?what is the significance of gravimetry analysis?