Which error will lead to negative deviation from the theoretical Keq? a. cuvette was filled to the brim with the sample. b. cuvette was washed with sodium hydroxide instead of distilled water. C. standard with the highest concentration was used in autozero. d. cuvette was misplaced such that the HO side faces tbe light

Which error will lead to negative deviation from the theoretical Keq? a. cuvette was filled to the brim with the sample. b. cuvette was washed with sodium hydroxide instead of distilled water. C. standard with the highest concentration was used in autozero. d. cuvette was misplaced such that the HO side faces tbe light

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter24: Introduction To Spectrochemical Methods

Section: Chapter Questions

Problem 24.28QAP

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49 3. In a preliminary experiment, a solution containing 0.083M X and 0.0666M S gave peak areas of A, = 423 and As = 347. In the analysis of an unknown sample, 10.0 ml of 0.146M S was added to 10,0 ml. of the unknown and the mixture was diluted to 25 ml. in a volumetric flask. Axin the mixture was 553 and As was 582. What is the concentration of X in the unknown?
10) 1.0 gram of CaCO3 was dissolved in HCl and the solution was made up to 1000 ml with distilled water. 50 ml of the solution required 45 ml of EDTA solution for titration, 50 ml of hard water sample required 28 ml of EDTA and after boiling and filtering required 15 ml of EDTA solution. Calculate Temporary Hardness. A. 288.6 ppmB. 166.6 ppmC. 88.6ppm 11) Calculate the Permanent Hardness for No. 10 A. 111 ppmB. 222 ppmC. 333 ppm 12) Calculate the Total Hardness for No. 10 A. 421.6 ppmB. 621.6 ppmC. 521.6 ppm
1. These are balances that have a maximum loading of 10 to 30 g with a precision of 60.01 mgA. semi-microanalyticalB. MicroanalyticalC. MacrobalancesD. Triple Beam Balance2. Which type of curve is normally produced when plotting the change in the concentration of a specie of some function and the amount of reagent added?A. Titration curveB. Sigmoidal CurveC. Phase Transition curveD. Calibration curve3. In the dead dear case study, silver diethyldithiocarbamateforms a colored solution when it binds with arsenic, what do we call substance like silver diethyldithiocarbamate?A. Secondary standard reagentB. Precipitating agentC. Chelating agentD. Primary standard reagent
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