Introduction to General, Organic and Biochemistry
11th Edition
ISBN: 9781285869759
Author: Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher: Cengage Learning
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Chapter 16, Problem 16.27P
16-27 Guanidine, p/Ca 13.6, is a very strong base, almost as basic as hydroxide ion.
NH
NH2+
II
II
H2N—C—NH2 + H2O H2N—C—NH2 + OH"
Guanidine
Guanidinium ion
pKb = 13.6
- Complete the Lewis structure for guanidine, showing all valence electrons.
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Consider the following data on some weak acids and weak bases:
acid
base
Ba
K,
name
formula
name
formula
hydrocyanic acid
HCN
10
4.9 x 10
methylamine| CH3NH2 |4.4 × 10
HCH,CO2 1.8 × 10
ethylamine C2H5NH2|6.4 × 10
acetic acid
Use this data to rank the following solutions in order of increasing pH. In other words, select a '1' next to the solution that will have the lowest pH, a '2' next to
the solution that will have the next lowest pH, and so on.
solution
pH
0.1 M NaCN
choose one
0.1 M KBr
choose one
0.1 М КСН3СО2
choose one
0.1 М CН3NHзBr
choose one
Consider the following data on some weak acids and weak bases:
base
acid
Κα
a
Ко
name
formula
name
formula
hydrofluoric acid
4
HF
6.8 × 10
pyridine CH&N 1.7x10
acetic acid
HCH3CO2 1.8 × 10¯¯
methylamine CH3NH2 4.4 × 10¯
-4
Use this data to rank the following solutions in order of increasing pH. In other words, select a '1' next to the solution that will have the lowest pH, a '2' next to
the solution that will have the next lowest pH, and so on.
0.1 M KCI
solution
PH
✓ choose one
1 (lowest)
0.1 M CH3NH3Br
0.1 M C5H5NHCI
0.1 M NaF
2
3
4 (highest)
choose one v
Х
О-С-ОН O C-OH
О-С-ОН
NO₂
H2C-CH3
ОН
IV
V
1
||
Rank the following acids by acid strength, from least acidic to most acidic. Justify the answer.
O=C-OH
0-C-OH
Br
Chapter 16 Solutions
Introduction to General, Organic and Biochemistry
Ch. 16.1 - Problem 16-1 How many hydrogen atoms does...Ch. 16.2 - Problem 16-2 Write a structural formula for each...Ch. 16.2 - Prob. 16.3PCh. 16.4 - Problem 16-4 Select the stronger base from each...Ch. 16.5 - Prob. 16.5PCh. 16 - 16-6 Answer true or false. te/7-Butylamine is a 3°...Ch. 16 - Prob. 16.7PCh. 16 - Prob. 16.8PCh. 16 - 16-9 In what way are pyridine and pyrimidine...Ch. 16 - Prob. 16.10P
Ch. 16 - Prob. 16.11PCh. 16 - Prob. 16.12PCh. 16 - 16-13 Classify each amino group as primary,...Ch. 16 - Prob. 16.14PCh. 16 - 16-15 There are eight primary amines with the...Ch. 16 - Prob. 16.16PCh. 16 - 16-17 Propylamine (bp 48°C), ethylmethylamine (bp...Ch. 16 - 16-18 Account for the fact that 1-butanamine (bp...Ch. 16 - 16-19 2-Me thy 1 propane (bp -12°C), 2-propanol...Ch. 16 - Prob. 16.20PCh. 16 - Prob. 16.21PCh. 16 - Prob. 16.22PCh. 16 - Prob. 16.23PCh. 16 - Prob. 16.24PCh. 16 - Prob. 16.25PCh. 16 - 16-26 The p/fb of amphetamine is approximately 3.2...Ch. 16 - 16-27 Guanidine, p/Ca 13.6, is a very strong base,...Ch. 16 - 16-28 Following is the structural formula of...Ch. 16 - Prob. 16.29PCh. 16 - Prob. 16.30PCh. 16 - Prob. 16.31PCh. 16 - 16*32 Many tumors of the breast are correlated...Ch. 16 - Prob. 16.33PCh. 16 - Prob. 16.34PCh. 16 - 16-35 (Chemical Connections 16B ) What is an...Ch. 16 - Prob. 16.36PCh. 16 - Prob. 16.37PCh. 16 - Prob. 16.38PCh. 16 - Prob. 16.39PCh. 16 - Prob. 16.40PCh. 16 - Prob. 16.41PCh. 16 - Prob. 16.42PCh. 16 - Prob. 16.43PCh. 16 - Prob. 16.44PCh. 16 - Prob. 16.45PCh. 16 - 16-46 Arrange these three compounds in order of...Ch. 16 - Prob. 16.47PCh. 16 - Prob. 16.48PCh. 16 - Prob. 16.49PCh. 16 - Prob. 16.50PCh. 16 - Prob. 16.51PCh. 16 - Prob. 16.52PCh. 16 - Prob. 16.53PCh. 16 - 16-54 Several poisonous plants, including Atropa...Ch. 16 - Prob. 16.55PCh. 16 - Prob. 16.56PCh. 16 - Prob. 16.57PCh. 16 - 16-58 Following is a structural formula of...Ch. 16 - Prob. 16.59P
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- A very strong base can remove a proton from methylamine:arrow_forwardConsider the following data on some weak acids and weak bases: acid base K, K, name formula name formula 8- 3.0 x 10 -10 hypochlorous acid HCIO aniline C6H5NH2 4.3 × 10 hydrocyanic acid HCN - 10 4.9 × 10 pyridine C3H3N 1.7 x 10 Use this data to rank the following solutions in order of increasing pH. In other words, select a 'l' next to the solution that will have the lowest pH, a '2' next to the solution that will have the next lowest pH, and so on. solution pH 0.1 M C6H5NH3CI choose one 0.1 M NaCN choose one 0.1 M NaNOз choose one 0.1 М KCIO choose onearrow_forwardConsider the following data on some weak acids and weak bases: acid base Ka name formula name formula hydrocyanic acid НCN - 10 4.9 x 10 methylamine CH3NH2 |4.4 × 10 hypochlorous acid HC1O 8. 3.0 × 10 ethylamine C2H,NH,|6.4 × 10 Use this data to rank the following solutions in order of increasing pH. In other words, select a 'l' next to the solution that will have the lowest pH, a '2' next to the solution that will have the next lowest pH, and so on. solution pH 0.1 M C2H5NH3CI choose one 0.1 M NaCN choose one 0.1 M NaCi choose one 0.1 М CН3NH3B choose onearrow_forward
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