9.24
Therefore it determines pH of a 0.2M solution of pyridine is 9.24.

Each dissociation has a unique Ka and pKa value. When the moles of base added equals half the total moles of acid, the weak acid and its conjugate base are in equal amounts. The ratio of CB / WA = 1 and according to the HH equation, pH = pKa + log(1) or pH = pKa.

A carbamate is either a salt or an ester of carbamic acid ( NH2COOR ). The corresponding structures are NH2COO- and NH2COOR . The NH2 group and the COO- group are both basic.

Carbamate is an amino-acid anion. It is a conjugate base of a carbamic acid.

Piperidine for synthesis. CAS 110-89-4, pH 12.6 (100 g/l, H₂O, 20 °C).

A dithiane is a heterocyclic compound composed of a cyclohexane core structure wherein two methylene bridges (-CH. 2- units) are replaced by sulfur centres.

If you need to determine the pH of a solution from the pKa of the acid dissolved (which can be determined in turn from its acid dissociation constant Ka), you can use the Henderson-Hasselbach equation. You just need to know the equilibrium concentration of the acid and its conjugate base. Sciencing_Icons_Science

The value of pKa, on the other hand, depends on the concentrations of acid and conjugate base in solution after the acid dissociation has achieved equilibrium. The ratio of the concentrations of conjugate base and conjugate acid to the acid in question, in an aqueous solution, is called the dissociation constant, Ka. The value for pKa is given by:

2 – units) are replaced by sulfur centres. The three isomeric parent heterocycles are 1,2-dithiane, 1,3-dithiane and 1,4-dithiane . 1,3-Dithianes are protecting group of some carbonyl -containing compounds due to their inertness to many conditions.