0.1M solution of which of the following has almost unity degree of dissociation ?

Weak acids dissociate partially in aqueous medium. If any common ion is present in the solution, the degree of dissociation of the acid is suppressed however the dissociation constant value remains constant. In which of the following the degree of dissociation of water is maximum '?

Weak acids dissociate partially in aqueous medium. If any common ion is present in the solution, the degree of dissociation of the acid is suppressed however the dissociation constant value remains constant. In which of the following the degree of dissociation of water is maximum '?

The pH of 0.1 m solution of cyanic acid (HCNO) is 2.34. Calculate ionization constant of the acid and also its degree of dissociation in the solution.