Quèstion 19 A solution of potassium permanganate of unknown concentration was analyzed against a standard of various concentrations. Refer to the following data set to answer the succeeding questions (MM KMNO4 = 158.034 g/mol). Table 1. Data for Standard Calibration Curve KMN04 Standard Absorbance at 525 nm (grams/Liter) 0.008 0.10437 0.158 0.20197 0.316 0.45288 0.474 0.68232 0.632 0.89361 Table 2. Data for KMN04 Solution of Unknown Conc. Sample of Unknown Conc. Absorbance at 525 nm Undiluted 0.95423 KMN04 Diluted KMNO4 (50% dilution) 0.46514 Which of the following linear equation for the standard calibration curve is generated from Table 1? O y= 1.3179x + 0.04845 O y= 0.74923x – 0.03231 O y= 0.04848x + 1.3179 y= 0.03231x – 0.74923

Quèstion 19 A solution of potassium permanganate of unknown concentration was analyzed against a standard of various concentrations. Refer to the following data set to answer the succeeding questions (MM KMNO4 = 158.034 g/mol). Table 1. Data for Standard Calibration Curve KMN04 Standard Absorbance at 525 nm (grams/Liter) 0.008 0.10437 0.158 0.20197 0.316 0.45288 0.474 0.68232 0.632 0.89361 Table 2. Data for KMN04 Solution of Unknown Conc. Sample of Unknown Conc. Absorbance at 525 nm Undiluted 0.95423 KMN04 Diluted KMNO4 (50% dilution) 0.46514 Which of the following linear equation for the standard calibration curve is generated from Table 1? O y= 1.3179x + 0.04845 O y= 0.74923x – 0.03231 O y= 0.04848x + 1.3179 y= 0.03231x – 0.74923

Chemistry & Chemical Reactivity

9th Edition

ISBN:9781133949640

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

ChapterL: Let's Review

SectionL.2: Making Measurements: Precision, Accuracy, Experimental Error, And Standard Deviation

Problem 1RC

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