Cholic acid is a bile acid, a white crystalline substance insoluble in water, with a pKa of about 5.5.
Urea is an organic compound with the chemical formula (NH2)2CO often found in the urine of animals, with a pKa of about 0.18.
pKa=2.86
emusification and absorbtion of fat in the diet from the GIT
According to me, The pKa of chlorosulfonic acid is approximately -1.6.
H2SO3 is a weak acid, pKa=1.8, HCl is strong, pKa<<0
Acetic acid (from vinegar) is stronger, though mono-basic. pKa = 4.77 Carbonic acid (H2CO3) is di-basic. pKa,1 = 6.36 and pKa,2 = 10.25
bile acids
pKa=2.86
emusification and absorbtion of fat in the diet from the GIT
Salicylic acid has a pKa of 1.96 and acetylsalicylic acid (Aspirin) has a pKa of 3.48. Therefore salicylic acid is the stronger acid.
According to me, The pKa of chlorosulfonic acid is approximately -1.6.
It refers to the acidity of the fatty acid (which make up the oils). Every fatty acid is composed of a non-polar long chain of hydrocarbons (carbon and hydrogen) and a polar head made up of Carboxylic ACID. Every acid has something called pKa which determines the acidity of that acid.The bigger the pKa (e.g. 25), the weaker the acid.The smaller ther pKa (e.g. 2), the stronger the acid.
H2SO3 is a weak acid, pKa=1.8, HCl is strong, pKa<<0
The pka of a protonated ether (the conjugate acid) is about -3.5
Acetic acid (from vinegar) is stronger, though mono-basic. pKa = 4.77 Carbonic acid (H2CO3) is di-basic. pKa,1 = 6.36 and pKa,2 = 10.25
Sodium taurocholate and sodium glycocholate are sodium salt and are the chief ingredient of the bile of mammals. Glycocholic acid is a conjugate of cholic acid with glycine. Taurocholic acid is a conjugate of cholic acid with taurine. These bile salts help to emulsify the fatty substances for absorption.
pKa = -log KapKa = -log 5.4x10^-10pKa = 9.27
There are two answers: bicarbonate has two pKa's - because bicarbonate can gain a proton to become carbonic acid or lose a proton to become carbonate. Two reactions; two pKa's. The pKa for bicarbonate carbonic acid reaction is 6.4 The pKa for bicarbonate carbonate reaction is 10.3 Both pKa's are temperature sensitive.