Chemistry for Changing Times
14th Edition
ISBN: 9780134212777
Author: John W. Hill; Terry W. McCreary
Publisher: Pearson Education (US)
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Chapter 22, Problem 46AP
(a)
Interpretation Introduction
Interpretation:
The amount of botulin to kill a 
person.
Concept Introduction:
The lethal dose is defined as the indicator of lethal toxicity of any substance or any radiation. The lethal dose is given in
(b)
Interpretation Introduction
Interpretation:
The amount of botulin required to kill
billion people on earth, considering the average body weight of 
Concept Introduction:
The lethal dose is defined as the indicator of lethal toxicity of any substance or any radiation. The lethal dose is given in
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3) Propagation of uncertainty. Every measurement has uncertainty. In this problem, we'll
evaluate the uncertainty in every step of a titration of potassium hydrogen phthalate (a
common acid used in titrations, abbreviated KHP, formula CsH5KO4) with NaOH of an
unknown concentration.
The calculation that ultimately needs to be carried out is:
concentration NaOH
1000 x mass KHP × purity KHP
molar mass KHP x volume NaOH
Measurements:
a) You use a balance to weigh 0.3992 g of KHP. The uncertainty is ±0.15 mg (0.00015
g).
b) You use a buret to slowly add NaOH to the KHP until it reaches the endpoint. It takes
18.73 mL of NaOH. The uncertainty of the burst is 0.03 mL..
c) The manufacturer states the purity of KHP is 100%±0.05%.
d) Even though we don't think much about them, molar masses have uncertainty as well.
The uncertainty comes from the distribution of isotopes, rather than random
measurement error. The uncertainty in the elements composing KHP are:
a. Carbon:
b. Hydrogen:
±0.0008…
Don't used hand raiting and don't used Ai solution
How would you use infrared spectroscopy to distinguish between the following pairs of constitutional isomers?
(a)
CH3C=CCH3
||
and
CH3CH2C=CH
(b)
CH3CCH=CHCH3
and
CH3CCH2CH=CH2
Problem 12-41
The mass spectrum (a) and the infrared spectrum (b) of an unknown hydrocarbon are shown. Propose as many
structures as you can.
(a)
100
Relative abundance (%)
80
60
60
40
200
20
(b)
100
Transmittance (%)
10
20
20
80-
60-
40-
20
40
60
80
100
120
140
m/z
500
4000 3500
3000
2500
2000
1500
Wavenumber (cm-1)
1000
Chapter 22 Solutions
Chemistry for Changing Times
Ch. 22 - Prob. 1RQCh. 22 - Prob. 2RQCh. 22 - How does the toxicity of a substance depend on the...Ch. 22 - Prob. 4RQCh. 22 - Prob. 5RQCh. 22 - Prob. 6RQCh. 22 - Name several natural carcinogens.Ch. 22 - Prob. 8RQCh. 22 - Prob. 9PCh. 22 - Prob. 10P
Ch. 22 - Prob. 11PCh. 22 - Prob. 12PCh. 22 - Prob. 13PCh. 22 - Prob. 14PCh. 22 - Prob. 15PCh. 22 - Prob. 16PCh. 22 - Prob. 17PCh. 22 - Prob. 18PCh. 22 - Prob. 19PCh. 22 - Prob. 20PCh. 22 - Prob. 21PCh. 22 - Prob. 22PCh. 22 - Prob. 23PCh. 22 - Prob. 24PCh. 22 - Prob. 25PCh. 22 - Prob. 26PCh. 22 - Prob. 27PCh. 22 - Prob. 28PCh. 22 - Prob. 29PCh. 22 - Prob. 30PCh. 22 - Prob. 31PCh. 22 - Prob. 32PCh. 22 - Prob. 33PCh. 22 - Prob. 34PCh. 22 - Prob. 35PCh. 22 - Prob. 36PCh. 22 - Prob. 37PCh. 22 - Prob. 38PCh. 22 - Prob. 39PCh. 22 - Prob. 40PCh. 22 - Prob. 41PCh. 22 - Prob. 42PCh. 22 - Prob. 43PCh. 22 - Prob. 44PCh. 22 - Prob. 45APCh. 22 - Prob. 46APCh. 22 - Prob. 47APCh. 22 - Prob. 48APCh. 22 - Prob. 49APCh. 22 - Prob. 50APCh. 22 - Prob. 51APCh. 22 - Prob. 52APCh. 22 - Prob. 53APCh. 22 - Prob. 54APCh. 22 - Prob. 55APCh. 22 - Prob. 56APCh. 22 - The LD50 value for ethyl alcohol given orally to...Ch. 22 - Prob. 58APCh. 22 - Prob. 59APCh. 22 - Prob. 60APCh. 22 - Prob. 61APCh. 22 - Prob. 62APCh. 22 - Prob. 22.1CTECh. 22 - Prob. 22.2CTECh. 22 - Prob. 22.3CTECh. 22 - Prob. 22.4CTECh. 22 - Prob. 22.5CTECh. 22 - Prob. 1CGPCh. 22 - Prob. 2CGPCh. 22 - Prob. 3CGPCh. 22 - Prob. 4CGPCh. 22 - Prob. 5CGPCh. 22 - Prob. 6CGPCh. 22 - Prob. 1CHQCh. 22 - Prob. 2CHQCh. 22 - Prob. 3CHQCh. 22 - Prob. 4CHQ
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