Acids And Bases

If dissociation constant of acetic acid is , the hydrolysis constant of sodium acetate is

In a first order reaction, the concentration of the reactant becomes 0.0625 of its initial concentration after 2 hours. The half-life of the reaction is given by

How many atoms of an acidic hydrocarbon of molecular formula lie on a straight line ?

Conjugate acid and conjugate base of are respectively