draw a sample calibration curve for quantitative determination of phosphate using flow injection analysis. Show how a quantitative determination for the species is done using the calibration curve
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draw a sample calibration curve for quantitative determination of phosphate using flow injection analysis. Show how a quantitative determination for the species is done using the calibration curve
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- A chemist received a radioactive sample that is suspected to contain U, 23U and other elements. The authority wants to know the distribution, qualitative and quantitative composition of the sample. Propose with justifications, ONE Surface analysis technique that can be performed on this sample.What are the applications of re-crystallization in gravimetric analysis? answer at your own words and answer should be to the point, not any irrelevant wordsSCE students measured the concentration of HCl in a solution by titrating with different indicators to find the end point.Indicator Mean HCl concentration (M)(± standard deviation)Number of measurementsBromothymol blue 0.09565 ± 0.00225 28Methyl red 0.08686 ± 0.00098 18Bromocresol green 0.08641 ± 0.00113 29Is the difference between indicators 1 and 2 significant at the 95% confidence level? Answer the same question for indicators 2 and 3
- A second calibration standard solution of an iron(III) salicylate complex was prepared in two steps. First, 10.0 mL of a 0.100 M stock solution was added to 90.0 mL of solvent to make 100.0 mL of the first calibration standard solution and, secondly, 80 mL of that first calibration solution plus 20.0 mL of solvent were mixed to make the second calibration standard. What is the concentration of the second calibration standard solution?What conclusion can be derived from the following sentences regarding analytical methods: I. Classical methods (gravimetry and volumetric methods) are no longer useful in analytical chemistry. II. Volumetric methods do not require calibration if a primary standard is used as titrant. III. Instrumental methods are useful with analyte solutions that are less than 1.00 mM. IV. Classical methods yield high precision and accuracy at concentrations greater than 1.00 mM. What conclusion can be derived from the following sentences regarding analytical methods: Two statements are incorrect. All statements are correct. One statement is incorrect. Only one statement is correct. All statements are incorrect.A water sample was analyzed for Fe content using the iron-phenanthroline method. The following data were obtained from the analysis: Determine the value of the slope (m), y-intercept (b), and the coefficient of determination (r2)
- A community in a mountainous area of Bohol uses water collected from a nearby natural spring. A sample was submitted to a laboratory for the analysis of its total hardness. Describe the preparation of the following reagents: 100 mL of 1.0M stock EDTA solution. 0 L of 0.010 M EDTA solution from the stock EDT solution. 0 mL of 500.0 ppm of CaCO3 solution from a primary standard (assume solvent is distilled water only).The mass percent of Fe in an unknown salt sample was determined using both volumetric and gra vimetric titration. Ten determinations using both methods were performed. Volumetric(% of Fe): 24.22, 23.86, 24.07, 24.49, 24.69, 23.71, 24.28, 24.11, 24.26, 24.10 Gravimetric (% of Fe): 24.35, 24.26, 24.10,24.19, 24.18, 24.32, 24.11, 24.33, 24.17, 24.12 a. Do the two methods give similar standard deviations? b. Do the two methods give similar results for the mass percent of Fe at the 95% confidence level?I'm working on a pre-lab report for chemistry regarding retention factors. The question asks what is the maximum distance the indicator band will travel? Is the indicator band sometimes referred to as the indictor spot?
- I want a abstract of the hardness experiment and an explanation of the theory and objectives Thank youWhat are desirable properties of a gravimetric precipitate?In this problem, you will determine the % relative standard deviation (%RSD) from a series of titrations. Pretend that the [NaOH] you measured in your three titrations are 0.1018, 0.1024, and 0.0978. Determine the %RSD of these three values. Write your answer to one decimal place.
