You wish to measure the iron content of the well water on the new property you are about to buy. You prepare a reference standard Fe3+ solution with a concentration of 5.74×10−4 M. You treat 14.0 mL of this reference with HNO3 and excess KSCN to form a red complex and dilute the reference to 60.0 mL. The diluted reference is placed in a cell with a 1.00‑cm light path. You then take 30.0 mL of the well water, treat with HNO3 and excess KSCN, and dilute to 100.0 mL. This diluted sample is placed in a variable pathlength cell. The absorbance of the reference and the sample solutions match when the pathlength is 1.76 cm. What is the concentration of iron in the well water? For each solution, the zero is set with a blank. You wish to measure the iron content of the well water on the new property you are about to buy. You prepare a referencestandard Fe+ solution with a concentration of 5.74 x 10M. You treat 14.0 mL of this reference with HNO, and excessKSCN to form a red complex and dilute the reference to 60.0 mL. The diluted reference is placed in a cell with a 1.00-cmlight path. You then take 30.0 mL of the well water, treat with HNO, and excess KSCN, and dilute to 100.0 mL. Thisdiluted sample is placed in a variable pathlength cell. The absorbance of the reference and the sample solutions match whenthe pathlength is 1.76 cm. What is the concentration of iron in the well water? For each solution, the zero is set witha blank.[Fe*]well waterM%3|

data for reference standard Fe3+ solution V1 = 14ml. V2 = 60ml. M1 =5.74×10−4 M , M2 =? path…

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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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You wish to measure the iron content of the well water on the new property you are about to buy. You prepare a reference standard Fe3+ solution with a concentration of 5.74×10−4 M. You treat 14.0 mL of this reference with HNO3 and excess KSCN to form a red complex and dilute the reference to 60.0 mL. The diluted reference is placed in a cell with a 1.00‑cm light path. You then take 30.0 mL of the well water, treat with HNO3 and excess KSCN, and dilute to 100.0 mL. This diluted sample is placed in a variable pathlength cell. The absorbance of the reference and the sample solutions match when the pathlength is 1.76 cm. What is the concentration of iron in the well water? For each solution, the zero is set with a blank.

You wish to measure the iron content of the well water on the new property you are about to buy. You prepare a reference
standard Fe+ solution with a concentration of 5.74 x 10M. You treat 14.0 mL of this reference with HNO, and excess
KSCN to form a red complex and dilute the reference to 60.0 mL. The diluted reference is placed in a cell with a 1.00-cm
light path. You then take 30.0 mL of the well water, treat with HNO, and excess KSCN, and dilute to 100.0 mL. This
diluted sample is placed in a variable pathlength cell. The absorbance of the reference and the sample solutions match when
the pathlength is 1.76 cm. What is the concentration of iron in the well water? For each solution, the zero is set with
a blank.
[Fe*]well water
M
%3|

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