What is the pKa of sulfuric acid?

Sulfuric acid (H2SO4): pKa1 ≈ -3 (first dissociation only) p-Toluenesulfonic acid: pKa = -2.8.

What is the pKa of phosphoric acid?

2.16
Chapter 27 Appendix C: Dissociation Constants and pK a Values for Acids at 25°C

What is the pKa of carboxylic acid?

~ 5
The pKa of carboxylic acids typically ~ 5. They are significantly more acidic than water or alcohols.

What is the pKa of carbamate?

The ionization of the proton positioned on the carbamate functionality was confirmed spectrophotometrically (pKa = 10.1). The spectrophotometric result was in excellent agreement with that obtained from the solubility studies (pKa = 10.2).

What are the three pKa of phosphoric acid?

Phosphoric acid H3PO4 has three dissociable protons (it is triprotic) thus three pKa values; 2.12, 7.21, and 12.32).

Does higher pKa mean stronger acid?

Therefore, pKa was introduced as an index to express the acidity of weak acids, where pKa is defined as follows. In addition, the smaller the pKa value, the stronger the acid. For example, the pKa value of lactic acid is about 3.8, so that means lactic acid is a stronger acid than acetic acid.

Does Low pKa mean high pH?

The lower the pH, the higher the concentration of hydrogen ions [H+]. The lower the pKa, the stronger the acid and the greater its ability to donate protons. pH depends on the concentration of the solution. This is important because it means a weak acid could actually have a lower pH than a diluted strong acid.

How is the strength of an organic acid related to PKA?

approx. 60 For strengths of organic acids see E. P. Serjeant and B. Dempsey (eds.), Ionization Constants of Organic Acids in Solution, IUPAC Chemical Data Series No. 23, Pergamon Press, Oxford, UK, 1979. The strength of a base is related to the pKaof its conjugate acid as pKb= 14 – pKa.

Which is not present in the functional group pKa?

not present P Protonated   carbonyl    pKa   =   ‐7 2. P Protonated   alcohol   or   ether     pK H2   =   35 3 3. C Carboxylic   acid     pKa   =   4‐5 4 4. A Ammonium   ion     pKa   =   9‐10 5 5. P Phenol    pKa   =   10 6

Which is the best base for PKA vaules?

Name Acid / Conjugate base pKa Sulfuric acid -10 Hydrogen iodide -10 Hydrogen bromide -9 Hydrogen chloride -7 Acetone conjugate acid -7 Benzenesulfonic acid -6.5 Acetic acid conjugate acid -6 Diethyl ether conjugate acid -3.5 Ethanol conjugate acid -2 Methanesulfonic acid -2 Hydronium ion -1.74 Nitric acid -1.5 Trifluoroacetic acid 0.5

Where is the phosphate group located in glycerol 1 phosphate?

Glycerol 1-phosphate is a glycerol monophosphate having the phosphate group located at position 1. It has a role as a human metabolite and an algal metabolite. It is a conjugate acid of a glycerol 1-phosphate (2-). alpha-glycerophosphoric acid, 1,2,3-propanetriol-1- (18)O,3- (dihydrogen phosphate)-labeled