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EBK GENERAL CHEMISTRY
11th Edition
ISBN: 9780133400588
Author: Bissonnette
Publisher: VST
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Question
Chapter 3, Problem 111IAE
Interpretation Introduction
Interpretation:
The empirical formula of the yellowish-white compound formed on the copper strip in the presence of iodine vapor is to be calculated.
Concept introduction:
An empirical formula tells the simplest whole-number ratio of atoms of each element present in a molecule but not the exact number of atoms of each element.
The steps to determine the empirical formula is as follows:
1. Determine the mass and moles of each element present in a molecule.
2. Write the calculated moles of each element as the subscript of the element’s symbol to obtain a formula for the compound.
3. If the moles are not in the whole number then divide the subscript by smallest subscribe to get the empirical formula.
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Students have asked these similar questions
None
3. Consider the compounds below and determine if they are aromatic, antiaromatic, or
non-aromatic. In case of aromatic or anti-aromatic, please indicate number of I
electrons in the respective systems. (Hint: 1. Not all lone pair electrons were explicitly
drawn and you should be able to tell that the bonding electrons and lone pair electrons
should reside in which hybridized atomic orbital 2. You should consider ring strain-
flexibility and steric repulsion that facilitates adoption of aromaticity or avoidance of anti-
aromaticity)
H H
N
N:
NH2
N
Aromaticity
(Circle)
Aromatic Aromatic Aromatic Aromatic Aromatic
Antiaromatic Antiaromatic Antiaromatic Antiaromatic Antiaromatic
nonaromatic nonaromatic nonaromatic nonaromatic nonaromatic
aromatic TT
electrons
Me
H
Me
Aromaticity
(Circle)
Aromatic Aromatic Aromatic
Aromatic Aromatic
Antiaromatic Antiaromatic Antiaromatic Antiaromatic Antiaromatic
nonaromatic nonaromatic nonaromatic nonaromatic nonaromatic
aromatic πT
electrons
H
HH…
A chemistry graduate student is studying the rate of this reaction:
2 HI (g) →H2(g) +12(g)
She fills a reaction vessel with HI and measures its concentration as the reaction proceeds:
time
(minutes)
[IH]
0
0.800M
1.0
0.301 M
2.0
0.185 M
3.0
0.134M
4.0
0.105 M
Use this data to answer the following questions.
Write the rate law for this reaction.
rate
= 0
Calculate the value of the rate constant k.
k =
Round your answer to 2 significant digits. Also be
sure your answer has the correct unit symbol.
Chapter 3 Solutions
EBK GENERAL CHEMISTRY
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