A student would like to prepare a 0.010 M solution from a 1.0 M stock solution with minimal error. The student can choose to do a one-step dilution that uses a 10 mL transfer pipet and a 1000 mL volumetric flask or a two-step dilution using a 50 mL pipet and a 1000 mL volumetric flask for the first dilution, and a 100 mL pipet and a 500 mL volumetric flask for the second dilution. Which method has the smallest overall relative uncertainty and what is the value? **Use table 4.2 on page 70 in your textbook for tolerances of the glassware. O One-step dilution; 0.0020 Two-step dilution; 0.0020 O Two-step dilution; 0.0014 O One-step dilution; 0.0010

A student would like to prepare a 0.010 M solution from a 1.0 M stock solution with minimal error. The student can choose to do a one-step dilution that uses a 10 mL transfer pipet and a 1000 mL volumetric flask or a two-step dilution using a 50 mL pipet and a 1000 mL volumetric flask for the first dilution, and a 100 mL pipet and a 500 mL volumetric flask for the second dilution. Which method has the smallest overall relative uncertainty and what is the value? **Use table 4.2 on page 70 in your textbook for tolerances of the glassware. O One-step dilution; 0.0020 Two-step dilution; 0.0020 O Two-step dilution; 0.0014 O One-step dilution; 0.0010

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter33: Automated Methods Of Analysis

Section: Chapter Questions

Problem 33.8QAP

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