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 14P
Interpretation Introduction
Interpretation: The meaning of methemoglobin and how methemoglobin is affected by methylene blue.
Concept Introduction: Hemoglobin 
is a complex protein which is found in red blood cells in living organisms. It consists of iron 
ions that gives red color to the blood. The signification function of hemoglobin is to bind the oxygen and transport it to various cells in the body of the living organism.
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3. Propose a synthesis for the following transformation. Do not draw an arrow-pushing
mechanism below, but make sure to draw the product of each proposed step (3 points).
CN
+ En
CN
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
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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