2. Indicate whether the solution to each of the following problems requires a qualitative analysis, quantitative analysis, characterization analysis or a fundamental analysis. More than one (1) type of analysis maybe appropriate for some problems: 2.1 Elemental analysis of a newly synthesized compound. a) Quantitative Analysis b) Qualitative Analysis c) Characterization Analysis d) Fundamental Analysis 2.2 Measuring the concentration of glucose in blood a) Quantitative Analysis b) Qualitative Analysis c) Characterization Analysis d) Fundamental Analysis 2.3 Determining the difference between the bulk and the surface concentrations of Cr in steel a) Quantitative Analysis c) Characterization Analysis d) Fundamental Analysis b) Qualitative Analysis

2. Indicate whether the solution to each of the following problems requires a qualitative analysis, quantitative analysis, characterization analysis or a fundamental analysis. More than one (1) type of analysis maybe appropriate for some problems: 2.1 Elemental analysis of a newly synthesized compound. a) Quantitative Analysis b) Qualitative Analysis c) Characterization Analysis d) Fundamental Analysis 2.2 Measuring the concentration of glucose in blood a) Quantitative Analysis b) Qualitative Analysis c) Characterization Analysis d) Fundamental Analysis 2.3 Determining the difference between the bulk and the surface concentrations of Cr in steel a) Quantitative Analysis c) Characterization Analysis d) Fundamental Analysis b) Qualitative Analysis

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter5: Errors In Chemical Analyses

Section: Chapter Questions

Problem 5.10QAP

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pka=pH halfway to the equivalence point. what is the equivalence point volume? it says to do so by locating the inflection point of the curve. but i'm not sure what the inflection point of the curve is. it says: using a ruler, draw a vertical line that crosses the inflection point and extend this line so it crosses the horizontal axis (use vertical minor gridlines to guide vertical ruler) to find volume base at the equivalence point.
1. A manufacturing company is interested in knowing how much protein is present in their new protein bar. As part of their science and research team, what kind of analysis should you do? a. Qualitative analysis b. Quantitative analysis c. Characterization analysis d. Fundamental analysis 2. Presence of aluminum sulfate (alum) is a common thing to purify water; however, it can clog up pipelines. To determine how many aluminum sulfates are present in the water, what kind of analysis is needed? a) Qualitative analysis b) Quantitative analysis c) Characterization analysis d) Fundamental analysis 3. Predict the shift in the following equilibrium system from the following changes N2 (g) + 3 H2 (g) ⇌ N2H4 (g) ΔH = 92.5 kJ a. Favors the reactant side b. Favors the product side c. No shifting occurred a) When the volume increases? b) When a catalyst is added? c) When vessel is compressed? d) When temperature of the system is decreased?
2. Formaldehyde. Qualitative and quantitative analysis.
1. This acid affects other indicators if phenolphthalein is not used in the assay of sodium bicarbonate. 2.Determine the type of assay employed for this substance: SODIUM HYDROXIDE 3.This is the difference between the largest and smallest results in a series of measurements. 4.Determine the color of the indicator in a given condition: PHENOLPHTHALEIN IN AN ACIDIC ENVIRONMENT. 5.This is the weight in grams which is chemically equivalent to 1 gram-atom of hydrogen. CAN YOU HELP ME WITH THIS ONE PLS.. THE ANSWERS ARE ON THE WORD CLOUD (IMAGE ATACHED)
Experiment 1 and 2 Qualitative Analysis PURPOSE To develop a separation scheme and confirmatory tests for Fe3+, Ba2+, and Ag+ cations, and to use it to identify the ions in a sample of unknown composition. GOALS To explore solubilities and reactivities of different metal ions. To identify ions present in unknown solutions using "separation methods." To gain experience with logically developing a qualitative analysis scheme. INTRODUCTION Qualitative analysis is the process by which components of mixtures are separated and identified. Unlike quantitative analysis, where the amount of a particular material is measured, a qualitative analysis scheme simply confirms the presence or absence of certain materials. A common analysis is the identification of aqueous ions. In such an analysis, there are two distinct phases. First, a scheme must be developed to separate the ions from each other. Then, a different test is performed to uniquely confirm the identity of each separated ion. In this…
Trial 1: Initial pH= 3.92mL Mass of KHP and Paper= 0.868g Mass of paper= 0.357g Mass of KHP= 0.511g Trial 2: Initial pH= 4.09ml Mass of KHP and Paper= 0.870g Mass of paper= 0.359g Mass of KHP= 0.511g 1)Use Kb, the number of moles of C8H4O4^2- at the equivalence point, and the total volume at that point to calculate the pH for each sample at the equivalence point. Compare these calculated results with the experimental results.
Pre Lab Questions: (Each answer is to be written as a complete sentence) What is the reason for washing the precipitate with water in Step 9? Define precipitate. Define filtrate. In Step 2, what is the purpose for rinsing the stirring rod? read the Procedure to answer the questions Using a balance, mass between 1.50 – 2.00 grams of sodium carbonate in a pre-massed 150mL beaker. Add 20 mL of distilled water and stir thoroughly to make sure all the crystals are dissolved. Rinse the stirring rod with a little distilled water after stirring. Using a balance, mass between 1.50 – 2.00 grams of calcium chloride dihydrate in a pre-massed 50 mL beaker. Repeat Step 2 for the solution in the 50 mL beaker. Pour the calcium chloride solution into the 150mL beaker containing the sodium carbonate solution and stir. Mass a piece of filter paper. Fold the filter paper and place it into the funnel. Wet it with a little distilled water to ensure that it is stuck to the sides of the funnel. Slowly…
<Water hardness lab report> Q) My calculation is right? 1. I mixed hard water or tap water or soft water 5ml + pH buffer 1ml + 3 drops of indicator + EDTA xml 2. Given formula is (_ml EDTA / 1) x (1L / 1000ml) x (0.01 mol EDTA / 1L) x (1mol CaCO3 / 1 mol EDTA) = _ mol CaCO3 (_mol CaCO3 / _ml Water sample) x (100.1g CaCO3 / 1mol CaCO3) x (1000mg / 1g ) x (1000ml / 1L) = _mg/L CaCO3 _mg/L CaCO3 = _ppm CaCO3 3. My data is 1) hard water Hard Water Trial 1 Hard Water Trial 2 Hard Water Trial 3 Initial Syringe Reading 1.0ml 1.0ml 1.0ml Final Syringe Reading 0.88ml 0.84ml 0.85ml Volume of EDTA Consumed 0.12ml 0.16ml 0.15ml Water Hardness ppm CaCO3 Average ppm 2) Tap water Tap Water Trial 1 Tap Water Trial 2 Tap Water Trial 3 Initial Syringe Reading 1.0ml 1.0ml 1.0ml Final Syringe Reading 0.65ml 0.68ml 0.67ml Volume of EDTA Consumed 0.35ml 0.32ml 0.33ml Water…
Titration is the addition of a chemically equivalent volume of a solution of known concentration called analyte titrant fluent None of them
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2. Magnesium sulfate. Qualitative and quantitative analysis?
Prepare 250 mL stock acetic acid solutions and from this solution prepare 100 mL of eachstandard solutions (you have pippette with sensitivity of 0.1 mL). (0.015 M 0.030 M 0.060 M 0.090M 0.12 M 0.15 M)