A) Mention the steps to prepare a 50.0 ml of 0.15 M [ FeSCN 2+ ] solution from a 0.4 M  [FeSCN 2+ ] stock solution? B) Why the nitric acid is added in the preparation?

Fundamentals Of Analytical Chemistry
9th Edition
ISBN:9781285640686
Author:Skoog
Publisher:Skoog
Chapter21: Potentiometry
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Problem 21.12QAP
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Spectroscopic or (spectrophotometery) determination of an equilibrium constant experiment 

A) Mention the steps to prepare a 50.0 ml of 0.15 M [ FeSCN 2+ ] solution from a 0.4 M  [FeSCN 2+ ] stock solution?

B) Why the nitric acid is added in the preparation?

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