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Look up Frederick Bordwell's stuff. TONS of data on pKa's and even some stuff in non-aqueous solutions. https://scholar.google.com/scholar?q=pka+author%3AFG+bordwell&btnG=&hl=en&as_sdt=0%2C5
if you know a low pka = strong acid, you can see that the pH is relatively low (3) therefore for the second question you can eliminate 7 & 9 as an option, leaving you with A and B and then you can determine the best answer from there.
The way that you measure “how happy” a molecule is without a proton is to compare the pKa to the pH of the solution. When pKa=pH, the acid base reaction is at equilibrium and you will have 50% acid form, 50% base form.
27 Οκτ 2017 · Below are tables that include determined pKa values for various acids as determined in water, DMSO and in the gas Phase. These tables are compiled in PDF files below. For a more comprehensive discussion on this topic, please see Acidity and Basicity by professor William Reusch, Michigan State University.
Sample pKa TABLE compound pKa Bu-H 48 Ph-H 43 H 2 ~36 iPr 2N-H ~35 NCH3 O Me Me (amide α-H) 25 tBuOCH 3 O (ester) 24 MeCH3 O (ketone) ~20 MeN O H Me (amide N-H) ~18 iPrOH 16
Special Table Heterocycles 22 Indicators 31 Acridine 23 References 32-34 Benzoquinoline 24 Cinnoline 23 Hydantoin 24 Imidazole 24 For complex chelating agents, see also reference 77. ... Organic Division Updated 4/7/2022 Page 1. pKa Data Compiled by R. Williams ACIDS Compound pK Ref. H3PO2 2.0, 2.23* 28 H2PO4– 7.21* 77 AgOH 3.96 4 HPO4_ 12.32 ...
25 Νοε 2010 · Values for the negative logarithm of the acid dissociation constant, pKa, of inorganic acids and bases, as well as hydrated metal ions. Definitions of the acid dissociation constant and pKa are given below the table. pK a values given in the table are measuered at 25°C, unless other temperature (°C) is indicated with superscript at the pKa value.
