O-chem NMR regions and memorized pKa values

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23 Terms

1
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What is the chemical shift range for ketones and aldehydes in 13C NMR?

190+ ppm

<p>190+ ppm</p>
2
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What is the chemical shift range for carboxylic acids, esters, and amides in 13C NMR?

160-190 ppm

<p>160-190 ppm</p>
3
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What is the chemical shift range for alkenes in 13C NMR?

105-150 ppm

<p>105-150 ppm</p>
4
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What is the chemical shift range for Alkynes in 13C NMR?

75-95 ppm

<p>75-95 ppm</p>
5
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What is the chemical shift range for carbon attached to an electronegative element in 13C NMR?

10-80 ppm

<p>10-80 ppm</p>
6
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What is the chemical shift range for alkanes in 13C NMR?

10-50 ppm

<p>10-50 ppm</p>
7
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What is the chemical shift range for saturated alkane hydrogens in 1H NMR?

0-1.5 ppm

<p>0-1.5 ppm</p>
8
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What is the chemical shift range for allylic hydrogens in 1H NMR?

1.5-2.5

<p>1.5-2.5</p>
9
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What is the chemical shift range for hydrogens attached to a carbon attached to an electronegative element in 1H NMR?

2.5-4.5

<p>2.5-4.5</p>
10
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What is the chemical shift range for vinylic hydrogens in 1H NMR?

4.5-6.5

<p>4.5-6.5</p>
11
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What is the chemical shift range for aromatic hydrogens in 1H NMR?

6.5-8

<p>6.5-8</p>
12
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What is the chemical shift range for aldehyde hydrogens in 1H NMR?

9-10

<p>9-10</p>
13
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What is the chemical shift range for carboxylic acid hydrogens in 1H NMR?

10-12

<p>10-12</p>
14
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What is the pKa value for H2SO4?

-10

15
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What is the pKa value for H3O+?

-1.7

16
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What is the pKa value for Carboxylic Acid?

4-5

17
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What is the pKa value for a protonated amine?

9-11

18
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What is the pKa value for phenol?

10

19
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What is the pKa value for H2O?

15.7

20
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What is the pKa value for alkynes?

25

21
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What is the pKa value for a deprotonated amine?

37

22
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What is the pKa value for alkenes?

40-45

23
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What is the pKa value for alkanes?

45-50