Principles of Instrumental Analysis
7th Edition
ISBN: 9781337468039
Author: Skoog
Publisher: Cengage
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Chapter 21, Problem 21.10QAP
Interpretation Introduction
Interpretation:
The definition for the buried interface and the techniques available to study buried interfacial phenomena are to be stated.
Concept introduction:
The buried interfaces are those interface which are embedded under the surface in the layered structures. These types of interfaces are not present on the surfaces but present below the surfaces.
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PROBLEMS
Q1) Label the following salts as either acidic, basic, or neutral
a) Fe(NOx)
c) AlBr
b) NH.CH COO
d) HCOON
(1/2 mark each)
e) Fes
f) NaBr
Q2) What is the pH of a 0.0750 M solution of sulphuric acid?
8. Draw all the resonance forms for each of the fling molecules or ions, and indicate the major
contributor in each case, or if they are equivalent (45)
(2)
-PH2
سمة
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J
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Also calculate the amount of starting materials chlorobenzaldehyde and p-chloroacetophenone
required to prepare 400 mg of the given chalcone product 1, 3-bis(4-chlorophenyl)prop-2-en-1-one
molar mass ok 1,3-bis(4-Chlorophenyl) prop-2-en-1-one = 277.1591m01
number of moles= 0.400/277.15 = 0.00144 moles
2 x 0.00 144=0.00288 moves
arams of acetophenone = 0.00144 X 120.16 = 0.1739
0.1739x2=0.3469
grams of benzaldehyde = 0.00144X106.12=0.1539
0.1539x2 = 0.3069
Starting materials:
0.3469 Ox acetophenone,
0.3069 of benzaldehyde
3
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