Statement - I : Force between the plates of an isolated charged capacitor does not depend on distance between the plates.
Statement - II : Force between the plates can not be calculated using coulomb’s law.

 Force between the plates of an isolated charged capacitor does not depend on distance between the plates.

Force $\mathrm{F}=\frac{{\mathrm{Q}}^2}{{\mathrm{A\epsilon }}_{\mathrm{o}}}$, this will not depend on the separation between the plates.

Force between the plates can not be calculated using coulomb’s law, because the size of the plates are comparable to the separation between the plates.