PRINCIPLES OF INSTRUMENTAL ANALYSIS
7th Edition
ISBN: 9789353506193
Author: Skoog
Publisher: CENGAGE L
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Chapter A1, Problem A1.7QAP
Interpretation Introduction
Interpretation:
The relative error in the results due to this systematic error if the sample taken for analysis weighed
Concept introduction:
Solubility is the property of the substance by virtue of which a substance is able to dissolve with other substance which can be of the same state or can be in a different state. Solubility loss depends on the properties of the two substances to be mixed including solubility.
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A 3650-mg sample containing bromate and bromide was dissolved in sufficient water to give 250.0
mL. After acidification, silver nitrate was added to a 25.00 mL aliquot where the resulting precipitate
was filtered, washed and then redissolved in an ammoniacal solution of potassium
tetracyanonickelate(II) according to the reaction:
Ni(CN), + 2 AgBr) → 2 Ag(CN), + Ni? + 2 Br
The liberated nickel ion required 26.73 mL of 0.02089 M EDTA. The bromate ion in a 10.00 mL
aliquot was reduced to bromide with As* prior to the addition of silver nitrate. The same procedure
was followed and the released nickel ion was titrated with 21.94 mL of the EDTA solution. Calculate
the percentage of impurity in the sample. Br (79.904)
a. 24.45%
b.34.38%
c. 41.17%
d. 65.62%
7
Potassium Ferrioxalate is mixed with in 50 mL of 1 M H2SO4 In a beaker , it is then placed
one-half of this solution in another beaker in the sun and the other half in a cabinet in the dark. the
color of both solutions after 0, 5, 15, and 30 minutes are : In the sun it stayed clear the whole 30
min and the sample in the darkness of the cabinet turned light green, Briefly explain your
observations in terms of the photochemical properties of
ferrioxalate.
Chapter A1 Solutions
PRINCIPLES OF INSTRUMENTAL ANALYSIS
Ch. A1 - Prob. A1.1QAPCh. A1 - Prob. A1.2QAPCh. A1 - Prob. A1.3QAPCh. A1 - Prob. A1.4QAPCh. A1 - Prob. A1.5QAPCh. A1 - Prob. A1.6QAPCh. A1 - Prob. A1.7QAPCh. A1 - Prob. A1.8QAPCh. A1 - Prob. A1.9QAPCh. A1 - Prob. A1.10QAP
Ch. A1 - Prob. A1.11QAPCh. A1 - Prob. A1.12QAPCh. A1 - Prob. A1.13QAPCh. A1 - Prob. A1.14QAPCh. A1 - Prob. A1.15QAPCh. A1 - Prob. A1.16QAPCh. A1 - Prob. A1.17QAPCh. A1 - Prob. A1.18QAPCh. A1 - Prob. A1.19QAPCh. A1 - Prob. A1.20QAPCh. A1 - Prob. A1.21QAPCh. A1 - Prob. A1.22QAPCh. A1 - Prob. A1.23QAPCh. A1 - Prob. A1.24QAP
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