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# A 25.0-mL aliquot of an aqueous quinine solution was diluted to 50.0 mL andfound to have

ISBN: 9780495012016 317

## Solution for problem 14-1 Chapter 14

Principles of Instrumental Analysis | 6th Edition

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Problem 14-1

A 25.0-mL aliquot of an aqueous quinine solution was diluted to 50.0 mL andfound to have an absorhance of 0.656 at 3-lS nm when measured in a 2.50-cm cell.A second 25.0-mL aliquot was mixed with 10.00 mL of a solution containing25.7 ppm of quinine; after dilution to 50.0 mL. this solution had an absorbanceof 0.976 (2.50-COlcell). Calculate the concentration of quinine in parts per millionin the sample.

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Week 3 CHEM 1500 9/6 & 9/8 Week three, whoo hoo! This week we got into the mathematically difficult solving; Dimensional Analysis and Temperature. Dimensional analysis is used in all countries, but every country uses different units and this is why itâ€™s so handy. We will always be multiplying by a conversion factor. Some of the conversions you will know by heart and others are provided to...

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