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
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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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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