The ionic product of water at `60^(@)C` is `9.55 xx 10^(-14) "mole"^(2)L^(-2)`. The dissociation constant of water at the same temperature is

Options

A. `1.09 xx 10^(-15)`
B. `5.2 xx 10^(-16)`
C. `1.8 xx 10^(-16)`
D. `1.72 xx 10^(-15)`

Answer

D

Explanation

`K_(a) = (K_(w))/(55.5)`