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 KMnO4 Standard (grams/Liter) Absorbance at 525 nm 0.008 0.10437 0.158 0.20197 0.316 0.45288 0.474 0.68232 0.632 0.89361 Table 2. Data for KMnO4 Solution of Unknown Conc. Sample of Unknown Conc. Absorbance at 525 nm Undiluted KMnO4 0.95423 Diluted KMnO4 (50% dilution) 0.46514 Which of the following linear equation for the standard calibration curve is generated fromTable 1? y= 0.03231x – 0.74923 y= 0.04848x + 1.3179 y= 1.3179x + 0.04845 y= 0.74923x – 0.03231
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 KMnO4 Standard (grams/Liter) Absorbance at 525 nm 0.008 0.10437 0.158 0.20197 0.316 0.45288 0.474 0.68232 0.632 0.89361 Table 2. Data for KMnO4 Solution of Unknown Conc. Sample of Unknown Conc. Absorbance at 525 nm Undiluted KMnO4 0.95423 Diluted KMnO4 (50% dilution) 0.46514 Which of the following linear equation for the standard calibration curve is generated fromTable 1? y= 0.03231x – 0.74923 y= 0.04848x + 1.3179 y= 1.3179x + 0.04845 y= 0.74923x – 0.03231
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter4: Stoichiometry: Quantitative Information About Chemical Reactions
Section: Chapter Questions
Problem 77PS
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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
|
KMnO4 Standard (grams/Liter) |
Absorbance at 525 nm |
|
0.008 |
0.10437 |
|
0.158 |
0.20197 |
|
0.316 |
0.45288 |
|
0.474 |
0.68232 |
|
0.632 |
0.89361 |
Table 2. Data for KMnO4 Solution of Unknown Conc.
| Sample of Unknown Conc. | Absorbance at 525 nm |
| Undiluted KMnO4 | 0.95423 |
| Diluted KMnO4 (50% dilution) | 0.46514 |
Which of the following linear equation for the standard calibration curve is generated fromTable 1?
|
y= 0.03231x – 0.74923 |
||
|
y= 0.04848x + 1.3179 |
||
|
y= 1.3179x + 0.04845 |
||
|
y= 0.74923x – 0.03231 |
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